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142501043 = 174781569
BaseRepresentation
bin10000111111001…
…10010010110011
3100221010210200102
420133212102303
5242440013133
622050143015
73350144636
oct1037462263
9327123612
10142501043
1173490163
123b881a6b
13236a4859
1414cd5c1d
15c79c7e8
hex87e64b3

142501043 has 4 divisors (see below), whose sum is σ = 142584360. Its totient is φ = 142417728.

The previous prime is 142501033. The next prime is 142501049. The reversal of 142501043 is 340105241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340105241 = 748586463.

It is a cyclic number.

It is not a de Polignac number, because 142501043 - 26 = 142500979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142501049) 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, 39038 + ... + 42531.

It is an arithmetic number, because the mean of its divisors is an integer number (35646090).

Almost surely, 2142501043 is an apocalyptic number.

142501043 is a deficient number, since it is larger than the sum of its proper divisors (83317).

142501043 is an equidigital number, since it uses as much as digits as its factorization.

142501043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83316.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 142501043 is about 11937.3800726960. The cubic root of 142501043 is about 522.3232377515.

Adding to 142501043 its reverse (340105241), we get a palindrome (482606284).

The spelling of 142501043 in words is "one hundred forty-two million, five hundred one thousand, forty-three".

Divisors: 1 1747 81569 142501043