42738897 has 4 divisors (see below), whose sum is σ = 56985200. Its totient is φ = 28492596.

The previous prime is 42738893. The next prime is 42738907. The reversal of 42738897 is 79883724.

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 not a de Polignac number, because 42738897 - 2² = 42738893 is a prime.

It is a super-2 number, since 2×42738897² = 3653226633553218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42738893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7123147 + ... + 7123152.

It is an arithmetic number, because the mean of its divisors is an integer number (14246300).

Almost surely, 2^42738897 is an apocalyptic number.

It is an amenable number.

42738897 is a deficient number, since it is larger than the sum of its proper divisors (14246303).

42738897 is a wasteful number, since it uses less digits than its factorization.

42738897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14246302.

The product of its digits is 677376, while the sum is 48.

The square root of 42738897 is about 6537.4992925430. The cubic root of 42738897 is about 349.6292591285.

The spelling of 42738897 in words is "forty-two million, seven hundred thirty-eight thousand, eight hundred ninety-seven".