42735897 has 8 divisors (see below), whose sum is σ = 63312480. Its totient is φ = 28490580.

The previous prime is 42735893. The next prime is 42735911. The reversal of 42735897 is 79853724.

It is not a de Polignac number, because 42735897 - 2² = 42735893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42735893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791379 + ... + 791432.

It is an arithmetic number, because the mean of its divisors is an integer number (7914060).

Almost surely, 2^42735897 is an apocalyptic number.

It is an amenable number.

42735897 is a deficient number, since it is larger than the sum of its proper divisors (20576583).

42735897 is a wasteful number, since it uses less digits than its factorization.

42735897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582820 (or 1582814 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 42735897 is about 6537.2698429849. The cubic root of 42735897 is about 349.6210783502.

The spelling of 42735897 in words is "forty-two million, seven hundred thirty-five thousand, eight hundred ninety-seven".