123772342574 has 4 divisors (see below), whose sum is σ = 185658513864. Its totient is φ = 61886171286.

The previous prime is 123772342567. The next prime is 123772342627. The reversal of 123772342574 is 475243277321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 475243277321 = 27527 ⋅17264623.

It is a super-2 number, since 2×123772342574² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30943085642 + ... + 30943085645.

It is an arithmetic number, because the mean of its divisors is an integer number (46414628466).

Almost surely, 2^123772342574 is an apocalyptic number.

123772342574 is a deficient number, since it is larger than the sum of its proper divisors (61886171290).

123772342574 is an equidigital number, since it uses as much as digits as its factorization.

123772342574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61886171289.

The product of its digits is 1975680, while the sum is 47.

The spelling of 123772342574 in words is "one hundred twenty-three billion, seven hundred seventy-two million, three hundred forty-two thousand, five hundred seventy-four".