42574387 has 2 divisors, whose sum is σ = 42574388. Its totient is φ = 42574386.

The previous prime is 42574333. The next prime is 42574391. The reversal of 42574387 is 78347524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42574387 - 2¹⁵ = 42541619 is a prime.

It is not a weakly prime, because it can be changed into another prime (42574327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21287193 + 21287194.

It is an arithmetic number, because the mean of its divisors is an integer number (21287194).

Almost surely, 2^42574387 is an apocalyptic number.

42574387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42574387 is an equidigital number, since it uses as much as digits as its factorization.

42574387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 40.

The square root of 42574387 is about 6524.9051334100. The cubic root of 42574387 is about 349.1800862031.

The spelling of 42574387 in words is "forty-two million, five hundred seventy-four thousand, three hundred eighty-seven".