74642459 has 2 divisors, whose sum is σ = 74642460. Its totient is φ = 74642458.

The previous prime is 74642419. The next prime is 74642479. The reversal of 74642459 is 95424647.

It is a strong prime.

It is an emirp because it is prime and its reverse (95424647) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74642459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74642419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37321229 + 37321230.

It is an arithmetic number, because the mean of its divisors is an integer number (37321230).

Almost surely, 2^74642459 is an apocalyptic number.

74642459 is a deficient number, since it is larger than the sum of its proper divisors (1).

74642459 is an equidigital number, since it uses as much as digits as its factorization.

74642459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 74642459 is about 8639.5867378018. The cubic root of 74642459 is about 421.0451276845.

The spelling of 74642459 in words is "seventy-four million, six hundred forty-two thousand, four hundred fifty-nine".