42434657 has 4 divisors (see below), whose sum is σ = 44668080. Its totient is φ = 40201236.

The previous prime is 42434647. The next prime is 42434677. The reversal of 42434657 is 75643424.

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 a cyclic number.

It is not a de Polignac number, because 42434657 - 2⁸ = 42434401 is a prime.

It is a super-2 number, since 2×42434657² = 3601400229415298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42434647) 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, 1116683 + ... + 1116720.

It is an arithmetic number, because the mean of its divisors is an integer number (11167020).

Almost surely, 2^42434657 is an apocalyptic number.

It is an amenable number.

42434657 is a deficient number, since it is larger than the sum of its proper divisors (2233423).

42434657 is a wasteful number, since it uses less digits than its factorization.

42434657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233422.

The product of its digits is 80640, while the sum is 35.

The square root of 42434657 is about 6514.1888980901. The cubic root of 42434657 is about 348.7976621524.

The spelling of 42434657 in words is "forty-two million, four hundred thirty-four thousand, six hundred fifty-seven".