123037398 has 72 divisors (see below), whose sum is σ = 310348584. Its totient is φ = 35080320.

The previous prime is 123037337. The next prime is 123037403. The reversal of 123037398 is 893730321.

It is a happy number.

123037398 is a `hidden beast` number, since 1 + 230 + 37 + 398 = 666.

It is a super-2 number, since 2×123037398² = 30276402613220808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35365 + ... + 38687.

It is an arithmetic number, because the mean of its divisors is an integer number (4310397).

Almost surely, 2^123037398 is an apocalyptic number.

123037398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123037398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155174292).

123037398 is an abundant number, since it is smaller than the sum of its proper divisors (187311186).

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

123037398 is a wasteful number, since it uses less digits than its factorization.

123037398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 123037398 is about 11092.2224103198. Note that the first 3 decimals coincide. The cubic root of 123037398 is about 497.3693812962.

It can be divided in two parts, 12303 and 7398, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 123037398 in words is "one hundred twenty-three million, thirty-seven thousand, three hundred ninety-eight".