123137388 has 48 divisors (see below), whose sum is σ = 348270720. Its totient is φ = 37314000.

The previous prime is 123137323. The next prime is 123137401. The reversal of 123137388 is 883731321.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50638 + ... + 53013.

It is an arithmetic number, because the mean of its divisors is an integer number (7255640).

Almost surely, 2^123137388 is an apocalyptic number.

123137388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123137388 is an abundant number, since it is smaller than the sum of its proper divisors (225133332).

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

123137388 is a wasteful number, since it uses less digits than its factorization.

123137388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103675 (or 103667 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 123137388 is about 11096.7287071461. The cubic root of 123137388 is about 497.5040788198.

It can be divided in two parts, 12313 and 7388, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 123137388 in words is "one hundred twenty-three million, one hundred thirty-seven thousand, three hundred eighty-eight".