42131377 has 4 divisors (see below), whose sum is σ = 43963200. Its totient is φ = 40299556.

The previous prime is 42131371. The next prime is 42131399. The reversal of 42131377 is 77313124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42131377 - 2¹⁹ = 41607089 is a prime.

It is a super-2 number, since 2×42131377² = 3550105855832258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42131371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915877 + ... + 915922.

It is an arithmetic number, because the mean of its divisors is an integer number (10990800).

Almost surely, 2^42131377 is an apocalyptic number.

It is an amenable number.

42131377 is a deficient number, since it is larger than the sum of its proper divisors (1831823).

42131377 is a wasteful number, since it uses less digits than its factorization.

42131377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831822.

The product of its digits is 3528, while the sum is 28.

The square root of 42131377 is about 6490.8687400070. The cubic root of 42131377 is about 347.9647237110.

The spelling of 42131377 in words is "forty-two million, one hundred thirty-one thousand, three hundred seventy-seven".