42457941 has 18 divisors (see below), whose sum is σ = 63383190. Its totient is φ = 27386640.

The previous prime is 42457927. The next prime is 42457957. The reversal of 42457941 is 14975424.

It is a happy number.

42457941 is a `hidden beast` number, since 42 + 4 + 579 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 77841 = 6510^2 + 279^2 .

It is not a de Polignac number, because 42457941 - 2²² = 38263637 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42457896 and 42457905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42457901) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6195 + ... + 11103.

Almost surely, 2^42457941 is an apocalyptic number.

It is an amenable number.

42457941 is a deficient number, since it is larger than the sum of its proper divisors (20925249).

42457941 is a wasteful number, since it uses less digits than its factorization.

42457941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977 (or 4943 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42457941 is about 6515.9758286844. The cubic root of 42457941 is about 348.8614458643.

The spelling of 42457941 in words is "forty-two million, four hundred fifty-seven thousand, nine hundred forty-one".