42091375 has 16 divisors (see below), whose sum is σ = 53176032. Its totient is φ = 33259200.

The previous prime is 42091363. The next prime is 42091391. The reversal of 42091375 is 57319024.

It is not a de Polignac number, because 42091375 - 2¹⁵ = 42058607 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 15 ways as a sum of consecutive naturals, for example, 8347 + ... + 12403.

It is an arithmetic number, because the mean of its divisors is an integer number (3323502).

Almost surely, 2^42091375 is an apocalyptic number.

42091375 is a deficient number, since it is larger than the sum of its proper divisors (11084657).

42091375 is an equidigital number, since it uses as much as digits as its factorization.

42091375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155 (or 4145 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 42091375 is about 6487.7866025325. The cubic root of 42091375 is about 347.8545628011.

The spelling of 42091375 in words is "forty-two million, ninety-one thousand, three hundred seventy-five".