123699552 has 48 divisors (see below), whose sum is σ = 325688832. Its totient is φ = 41109120.

The previous prime is 123699551. The next prime is 123699581. The reversal of 123699552 is 255996321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123699551) 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 in 7 ways as a sum of consecutive naturals, for example, 33477 + ... + 36987.

It is an arithmetic number, because the mean of its divisors is an integer number (6785184).

Almost surely, 2^123699552 is an apocalyptic number.

123699552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123699552 is an abundant number, since it is smaller than the sum of its proper divisors (201989280).

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

123699552 is a wasteful number, since it uses less digits than its factorization.

123699552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 3883 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 123699552 is about 11122.0300305295. The cubic root of 123699552 is about 498.2600213054.

It can be divided in two parts, 123699 and 552, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 123699552 in words is "one hundred twenty-three million, six hundred ninety-nine thousand, five hundred fifty-two".