42555775 has 12 divisors (see below), whose sum is σ = 53090352. Its totient is φ = 33837440.

The previous prime is 42555769. The next prime is 42555803. The reversal of 42555775 is 57755524.

It is a de Polignac number, because none of the positive numbers 2^k-42555775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922 + ... + 9271.

It is an arithmetic number, because the mean of its divisors is an integer number (4424196).

Almost surely, 2^42555775 is an apocalyptic number.

42555775 is a deficient number, since it is larger than the sum of its proper divisors (10534577).

42555775 is a wasteful number, since it uses less digits than its factorization.

42555775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10370 (or 10365 counting only the distinct ones).

The product of its digits is 245000, while the sum is 40.

The square root of 42555775 is about 6523.4787498696. The cubic root of 42555775 is about 349.1291957696.

The spelling of 42555775 in words is "forty-two million, five hundred fifty-five thousand, seven hundred seventy-five".