42940737 has 24 divisors (see below), whose sum is σ = 71098560. Its totient is φ = 24464160.

The previous prime is 42940721. The next prime is 42940823. The reversal of 42940737 is 73704924.

It is not a de Polignac number, because 42940737 - 2⁴ = 42940721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42940237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25714 + ... + 27332.

It is an arithmetic number, because the mean of its divisors is an integer number (2962440).

Almost surely, 2^42940737 is an apocalyptic number.

It is an amenable number.

42940737 is a deficient number, since it is larger than the sum of its proper divisors (28157823).

42940737 is a wasteful number, since it uses less digits than its factorization.

42940737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 42940737 is about 6552.9182048916. The cubic root of 42940737 is about 350.1787848491.

The spelling of 42940737 in words is "forty-two million, nine hundred forty thousand, seven hundred thirty-seven".