123572340 has 36 divisors (see below), whose sum is σ = 374836644. Its totient is φ = 32952576.

The previous prime is 123572329. The next prime is 123572369. The reversal of 123572340 is 43275321.

It can be written as a sum of positive squares in 2 ways, for example, as 32216976 + 91355364 = 5676^2 + 9558^2 .

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

It is a congruent number.

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, 343077 + ... + 343436.

It is an arithmetic number, because the mean of its divisors is an integer number (10412129).

Almost surely, 2^123572340 is an apocalyptic number.

123572340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123572340 is an abundant number, since it is smaller than the sum of its proper divisors (251264304).

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

123572340 is a wasteful number, since it uses less digits than its factorization.

123572340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686528 (or 686523 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 123572340 is about 11116.3096394442. The cubic root of 123572340 is about 498.0891600172.

The spelling of 123572340 in words is "one hundred twenty-three million, five hundred seventy-two thousand, three hundred forty".