123397092 has 108 divisors (see below), whose sum is σ = 390830076. Its totient is φ = 32538240.

The previous prime is 123397073. The next prime is 123397103. The reversal of 123397092 is 290793321.

It can be written as a sum of positive squares in 2 ways, for example, as 28451556 + 94945536 = 5334^2 + 9744^2 .

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

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, 20242 + ... + 25622.

It is an arithmetic number, because the mean of its divisors is an integer number (3618797).

Almost surely, 2^123397092 is an apocalyptic number.

123397092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123397092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195415038).

123397092 is an abundant number, since it is smaller than the sum of its proper divisors (267432984).

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

123397092 is a wasteful number, since it uses less digits than its factorization.

123397092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5418 (or 5406 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 123397092 is about 11108.4243707197. The cubic root of 123397092 is about 497.8535883523.

The spelling of 123397092 in words is "one hundred twenty-three million, three hundred ninety-seven thousand, ninety-two".