42512477 has 4 divisors (see below), whose sum is σ = 48585696. Its totient is φ = 36439260.

The previous prime is 42512471. The next prime is 42512479. The reversal of 42512477 is 77421524.

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 42512477 - 2²² = 38318173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42512471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3036599 + ... + 3036612.

It is an arithmetic number, because the mean of its divisors is an integer number (12146424).

Almost surely, 2^42512477 is an apocalyptic number.

It is an amenable number.

42512477 is a deficient number, since it is larger than the sum of its proper divisors (6073219).

42512477 is an equidigital number, since it uses as much as digits as its factorization.

42512477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073218.

The product of its digits is 15680, while the sum is 32.

The square root of 42512477 is about 6520.1592771956. The cubic root of 42512477 is about 349.0107494438.

The spelling of 42512477 in words is "forty-two million, five hundred twelve thousand, four hundred seventy-seven".