123813641 has 12 divisors (see below), whose sum is σ = 147380112. Its totient is φ = 103656168.

The previous prime is 123813631. The next prime is 123813647. The reversal of 123813641 is 146318321.

It is not a de Polignac number, because 123813641 - 2²² = 119619337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123813647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27275 + ... + 31488.

It is an arithmetic number, because the mean of its divisors is an integer number (12281676).

Almost surely, 2^123813641 is an apocalyptic number.

It is an amenable number.

123813641 is a deficient number, since it is larger than the sum of its proper divisors (23566471).

123813641 is an equidigital number, since it uses as much as digits as its factorization.

123813641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58820 (or 58813 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 123813641 is about 11127.1578132064. The cubic root of 123813641 is about 498.4131571875.

The spelling of 123813641 in words is "one hundred twenty-three million, eight hundred thirteen thousand, six hundred forty-one".