42131277 has 6 divisors (see below), whose sum is σ = 60856302. Its totient is φ = 28087512.

The previous prime is 42131273. The next prime is 42131279. The reversal of 42131277 is 77213124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 799236 = 6429^2 + 894^2 .

It is not a de Polignac number, because 42131277 - 2² = 42131273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42131277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42131273) 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, 2340618 + ... + 2340635.

It is an arithmetic number, because the mean of its divisors is an integer number (10142717).

Almost surely, 2^42131277 is an apocalyptic number.

It is an amenable number.

42131277 is a deficient number, since it is larger than the sum of its proper divisors (18725025).

42131277 is a wasteful number, since it uses less digits than its factorization.

42131277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681259 (or 4681256 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 42131277 is about 6490.8610368733. The cubic root of 42131277 is about 347.9644484094.

The spelling of 42131277 in words is "forty-two million, one hundred thirty-one thousand, two hundred seventy-seven".