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7149941 = 23310867
BaseRepresentation
bin11011010001100101110101
3111110020212122
4123101211311
53312244231
6413125325
7114526211
oct33214565
914406778
107149941
114043947
122489845
131634546
14d41941
1596377b
hex6d1975

7149941 has 4 divisors (see below), whose sum is σ = 7460832. Its totient is φ = 6839052.

The previous prime is 7149929. The next prime is 7149943. The reversal of 7149941 is 1499417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7149941 - 210 = 7148917 is a prime.

It is a super-2 number, since 2×71499412 = 102243312606962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155411 + ... + 155456.

It is an arithmetic number, because the mean of its divisors is an integer number (1865208).

Almost surely, 27149941 is an apocalyptic number.

It is an amenable number.

7149941 is a deficient number, since it is larger than the sum of its proper divisors (310891).

7149941 is a wasteful number, since it uses less digits than its factorization.

7149941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310890.

The product of its digits is 9072, while the sum is 35.

The square root of 7149941 is about 2673.9373590269. The cubic root of 7149941 is about 192.6493224943.

The spelling of 7149941 in words is "seven million, one hundred forty-nine thousand, nine hundred forty-one".

Divisors: 1 23 310867 7149941