123669056 has 28 divisors (see below), whose sum is σ = 280464768. Its totient is φ = 53000832.

The previous prime is 123669047. The next prime is 123669061. The reversal of 123669056 is 650966321.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×123669056² = 30588070823862272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137576 + ... + 138471.

Almost surely, 2^123669056 is an apocalyptic number.

123669056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123669056 is an abundant number, since it is smaller than the sum of its proper divisors (156795712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123669056 is an equidigital number, since it uses as much as digits as its factorization.

123669056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276066 (or 276056 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 123669056 is about 11120.6589732803. The cubic root of 123669056 is about 498.2190721232.

The spelling of 123669056 in words is "one hundred twenty-three million, six hundred sixty-nine thousand, fifty-six".