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7142949001 = 11816048221
BaseRepresentation
bin1101010011100000…
…01100000010001001
3200102210201101221201
412221300030002021
5104112043332001
63140442104201
7342003031126
oct65160140211
920383641851
107142949001
113036010341
1214741ab061
1389ab06656
144ba92b74d
152bc154501
hex1a9c0c089

7142949001 has 4 divisors (see below), whose sum is σ = 7148998404. Its totient is φ = 7136899600.

The previous prime is 7142948987. The next prime is 7142949013. The reversal of 7142949001 is 1009492417.

7142949001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1009492417 = 6715067051.

It can be written as a sum of positive squares in 2 ways, for example, as 6272640000 + 870309001 = 79200^2 + 29501^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142949001 - 27 = 7142948873 is a prime.

It is a super-3 number, since 3×71429490013 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7142949061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022930 + ... + 3025291.

It is an arithmetic number, because the mean of its divisors is an integer number (1787249601).

Almost surely, 27142949001 is an apocalyptic number.

It is an amenable number.

7142949001 is a deficient number, since it is larger than the sum of its proper divisors (6049403).

7142949001 is a wasteful number, since it uses less digits than its factorization.

7142949001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049402.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7142949001 is about 84515.9689112064. The cubic root of 7142949001 is about 1925.8650411148.

The spelling of 7142949001 in words is "seven billion, one hundred forty-two million, nine hundred forty-nine thousand, one".

Divisors: 1 1181 6048221 7142949001