42745797 has 24 divisors (see below), whose sum is σ = 64272000. Its totient is φ = 27343008.

The previous prime is 42745783. The next prime is 42745819. The reversal of 42745797 is 79754724.

42745797 is a `hidden beast` number, since 4 + 2 + 74 + 579 + 7 = 666.

It is not a de Polignac number, because 42745797 - 2⁸ = 42745541 is a prime.

It is a super-2 number, since 2×42745797² = 3654406322330418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42745777) 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, 51528 + ... + 52350.

It is an arithmetic number, because the mean of its divisors is an integer number (2678000).

Almost surely, 2^42745797 is an apocalyptic number.

It is an amenable number.

42745797 is a deficient number, since it is larger than the sum of its proper divisors (21526203).

42745797 is a wasteful number, since it uses less digits than its factorization.

42745797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1054 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 42745797 is about 6538.0269959675. The cubic root of 42745797 is about 349.6480734658.

The spelling of 42745797 in words is "forty-two million, seven hundred forty-five thousand, seven hundred ninety-seven".