123660507 has 4 divisors (see below), whose sum is σ = 164880680. Its totient is φ = 82440336.

The previous prime is 123660503. The next prime is 123660527. The reversal of 123660507 is 705066321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705066321 = 3 ⋅235022107.

It is not a de Polignac number, because 123660507 - 2² = 123660503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123660503) 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, 20610082 + ... + 20610087.

It is an arithmetic number, because the mean of its divisors is an integer number (41220170).

Almost surely, 2^123660507 is an apocalyptic number.

123660507 is a deficient number, since it is larger than the sum of its proper divisors (41220173).

123660507 is an equidigital number, since it uses as much as digits as its factorization.

123660507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41220172.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 123660507 is about 11120.2745919334. The cubic root of 123660507 is about 498.2075915553.

The spelling of 123660507 in words is "one hundred twenty-three million, six hundred sixty thousand, five hundred seven".