74240137 has 4 divisors (see below), whose sum is σ = 74356240. Its totient is φ = 74124036.

The previous prime is 74240129. The next prime is 74240141. The reversal of 74240137 is 73104247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74240137 - 2³ = 74240129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74240737) 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 in 3 ways as a sum of consecutive naturals, for example, 57087 + ... + 58372.

It is an arithmetic number, because the mean of its divisors is an integer number (18589060).

Almost surely, 2^74240137 is an apocalyptic number.

It is an amenable number.

74240137 is a deficient number, since it is larger than the sum of its proper divisors (116103).

74240137 is a wasteful number, since it uses less digits than its factorization.

74240137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116102.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 74240137 is about 8616.2716414932. The cubic root of 74240137 is about 420.2872883271.

The spelling of 74240137 in words is "seventy-four million, two hundred forty thousand, one hundred thirty-seven".