42064431 has 8 divisors (see below), whose sum is σ = 56410800. Its totient is φ = 27880512.

The previous prime is 42064411. The next prime is 42064433. The reversal of 42064431 is 13446024.

42064431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42064431 - 2¹⁴ = 42048047 is a prime.

It is a super-2 number, since 2×42064431² = 3538832710707522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42064433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40006 + ... + 41043.

It is an arithmetic number, because the mean of its divisors is an integer number (7051350).

Almost surely, 2^42064431 is an apocalyptic number.

42064431 is a deficient number, since it is larger than the sum of its proper divisors (14346369).

42064431 is a wasteful number, since it uses less digits than its factorization.

42064431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81225.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42064431 is about 6485.7097529877. The cubic root of 42064431 is about 347.7803227781.

The spelling of 42064431 in words is "forty-two million, sixty-four thousand, four hundred thirty-one".