42049877 has 2 divisors, whose sum is σ = 42049878. Its totient is φ = 42049876.

The previous prime is 42049873. The next prime is 42049927. The reversal of 42049877 is 77894024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35450116 + 6599761 = 5954^2 + 2569^2 .

It is a cyclic number.

It is not a de Polignac number, because 42049877 - 2² = 42049873 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42049873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21024938 + 21024939.

It is an arithmetic number, because the mean of its divisors is an integer number (21024939).

Almost surely, 2^42049877 is an apocalyptic number.

It is an amenable number.

42049877 is a deficient number, since it is larger than the sum of its proper divisors (1).

42049877 is an equidigital number, since it uses as much as digits as its factorization.

42049877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 42049877 is about 6484.5876507300. The cubic root of 42049877 is about 347.7402082953.

The spelling of 42049877 in words is "forty-two million, forty-nine thousand, eight hundred seventy-seven".