42402775 has 12 divisors (see below), whose sum is σ = 55347400. Its totient is φ = 32136480.

The previous prime is 42402719. The next prime is 42402797. The reversal of 42402775 is 57720424.

42402775 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 42402775 - 2¹⁷ = 42271703 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 44160 + ... + 45109.

Almost surely, 2^42402775 is an apocalyptic number.

42402775 is a deficient number, since it is larger than the sum of its proper divisors (12944625).

42402775 is a wasteful number, since it uses less digits than its factorization.

42402775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89298 (or 89293 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 42402775 is about 6511.7413185722. The cubic root of 42402775 is about 348.7102873979.

The spelling of 42402775 in words is "forty-two million, four hundred two thousand, seven hundred seventy-five".