42053791 has 6 divisors (see below), whose sum is σ = 45537720. Its totient is φ = 38818728.

The previous prime is 42053779. The next prime is 42053831. The reversal of 42053791 is 19735024.

It is not a de Polignac number, because 42053791 - 2⁹ = 42053279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42053761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124251 + ... + 124588.

It is an arithmetic number, because the mean of its divisors is an integer number (7589620).

Almost surely, 2^42053791 is an apocalyptic number.

42053791 is a deficient number, since it is larger than the sum of its proper divisors (3483929).

42053791 is a wasteful number, since it uses less digits than its factorization.

42053791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248865 (or 248852 counting only the distinct ones).

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

The square root of 42053791 is about 6484.8894362202. The cubic root of 42053791 is about 347.7509971730.

The spelling of 42053791 in words is "forty-two million, fifty-three thousand, seven hundred ninety-one".