123989056 has 14 divisors (see below), whose sum is σ = 246040910. Its totient is φ = 61994496.

The previous prime is 123989053. The next prime is 123989059. The reversal of 123989056 is 650989321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123989053) and next prime (123989059).

It can be written as a sum of positive squares in only one way, i.e., 112699456 + 11289600 = 10616^2 + 3360^2 .

It is a super-2 number, since 2×123989056² = 30746572015542272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123989053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968601 + ... + 968728.

Almost surely, 2^123989056 is an apocalyptic number.

123989056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123989056 is a deficient number, since it is larger than the sum of its proper divisors (122051854).

123989056 is an equidigital number, since it uses as much as digits as its factorization.

123989056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937341 (or 1937331 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 123989056 is about 11135.0373147107. The cubic root of 123989056 is about 498.6484244457.

The spelling of 123989056 in words is "one hundred twenty-three million, nine hundred eighty-nine thousand, fifty-six".