42455623 has 16 divisors (see below), whose sum is σ = 51428160. Its totient is φ = 34272000.

The previous prime is 42455603. The next prime is 42455641. The reversal of 42455623 is 32655424.

42455623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42455623 - 2⁹ = 42455111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455603) 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 15 ways as a sum of consecutive naturals, for example, 5773 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (3214260).

Almost surely, 2^42455623 is an apocalyptic number.

42455623 is a deficient number, since it is larger than the sum of its proper divisors (8972537).

42455623 is a wasteful number, since it uses less digits than its factorization.

42455623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178.

The product of its digits is 28800, while the sum is 31.

The square root of 42455623 is about 6515.7979557380. The cubic root of 42455623 is about 348.8550970280.

The spelling of 42455623 in words is "forty-two million, four hundred fifty-five thousand, six hundred twenty-three".