123624491 has 4 divisors (see below), whose sum is σ = 125651184. Its totient is φ = 121597800.

The previous prime is 123624481. The next prime is 123624539. The reversal of 123624491 is 194426321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123624491 - 2¹⁸ = 123362347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123624401) 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, 1013255 + ... + 1013376.

It is an arithmetic number, because the mean of its divisors is an integer number (31412796).

Almost surely, 2^123624491 is an apocalyptic number.

123624491 is a deficient number, since it is larger than the sum of its proper divisors (2026693).

123624491 is an equidigital number, since it uses as much as digits as its factorization.

123624491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026692.

The product of its digits is 10368, while the sum is 32.

The square root of 123624491 is about 11118.6550895331. The cubic root of 123624491 is about 498.1592193699.

The spelling of 123624491 in words is "one hundred twenty-three million, six hundred twenty-four thousand, four hundred ninety-one".