74121587 has 2 divisors, whose sum is σ = 74121588. Its totient is φ = 74121586.

The previous prime is 74121569. The next prime is 74121601. The reversal of 74121587 is 78512147.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74121587 - 2²² = 69927283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74151587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37060793 + 37060794.

It is an arithmetic number, because the mean of its divisors is an integer number (37060794).

Almost surely, 2^74121587 is an apocalyptic number.

74121587 is a deficient number, since it is larger than the sum of its proper divisors (1).

74121587 is an equidigital number, since it uses as much as digits as its factorization.

74121587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 35.

The square root of 74121587 is about 8609.3894673200. The cubic root of 74121587 is about 420.0634579098.

The spelling of 74121587 in words is "seventy-four million, one hundred twenty-one thousand, five hundred eighty-seven".