74536123 has 4 divisors (see below), whose sum is σ = 77776848. Its totient is φ = 71295400.

The previous prime is 74536117. The next prime is 74536141. The reversal of 74536123 is 32163547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32163547 = 13 ⋅2474119.

It is a de Polignac number, because none of the positive numbers 2^k-74536123 is a prime.

It is a super-2 number, since 2×74536123² = 11111267263742258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74536103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620328 + ... + 1620373.

It is an arithmetic number, because the mean of its divisors is an integer number (19444212).

Almost surely, 2^74536123 is an apocalyptic number.

74536123 is a deficient number, since it is larger than the sum of its proper divisors (3240725).

74536123 is a wasteful number, since it uses less digits than its factorization.

74536123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240724.

The product of its digits is 15120, while the sum is 31.

The square root of 74536123 is about 8633.4305464282. The cubic root of 74536123 is about 420.8450917038.

The spelling of 74536123 in words is "seventy-four million, five hundred thirty-six thousand, one hundred twenty-three".