123376520 has 16 divisors (see below), whose sum is σ = 277597260. Its totient is φ = 49350592.

The previous prime is 123376501. The next prime is 123376549. The reversal of 123376520 is 25673321.

It can be written as a sum of positive squares in 2 ways, for example, as 122633476 + 743044 = 11074^2 + 862^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1542167 + ... + 1542246.

Almost surely, 2^123376520 is an apocalyptic number.

123376520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123376520 is an abundant number, since it is smaller than the sum of its proper divisors (154220740).

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

123376520 is a wasteful number, since it uses less digits than its factorization.

123376520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084424 (or 3084420 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 123376520 is about 11107.4983682196. The cubic root of 123376520 is about 497.8259204577.

The spelling of 123376520 in words is "one hundred twenty-three million, three hundred seventy-six thousand, five hundred twenty".