123779052 has 36 divisors (see below), whose sum is σ = 313667536. Its totient is φ = 41156640.

The previous prime is 123779039. The next prime is 123779087. The reversal of 123779052 is 250977321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 123778998 and 123779016.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11073 + ... + 19239.

Almost surely, 2^123779052 is an apocalyptic number.

123779052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123779052 is an abundant number, since it is smaller than the sum of its proper divisors (189888484).

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

123779052 is a wasteful number, since it uses less digits than its factorization.

123779052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598 (or 8593 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 123779052 is about 11125.6034443081. The cubic root of 123779052 is about 498.3667400664.

The spelling of 123779052 in words is "one hundred twenty-three million, seven hundred seventy-nine thousand, fifty-two".