74540123 has 6 divisors (see below), whose sum is σ = 86709996. Its totient is φ = 63891492.

The previous prime is 74540117. The next prime is 74540129. The reversal of 74540123 is 32104547.

It is an interprime number because it is at equal distance from previous prime (74540117) and next prime (74540129).

It is not a de Polignac number, because 74540123 - 2¹⁰ = 74539099 is a prime.

It is a super-4 number, since 4×74540123⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74540092 and 74540101.

It is not an unprimeable number, because it can be changed into a prime (74540129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 760565 + ... + 760662.

It is an arithmetic number, because the mean of its divisors is an integer number (14451666).

Almost surely, 2^74540123 is an apocalyptic number.

74540123 is a deficient number, since it is larger than the sum of its proper divisors (12169873).

74540123 is a wasteful number, since it uses less digits than its factorization.

74540123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521241 (or 1521234 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 74540123 is about 8633.6622009435. The cubic root of 74540123 is about 420.8526198221.

The spelling of 74540123 in words is "seventy-four million, five hundred forty thousand, one hundred twenty-three".