123597945 has 48 divisors (see below), whose sum is σ = 231666240. Its totient is φ = 60746112.

The previous prime is 123597923. The next prime is 123597959. The reversal of 123597945 is 549795321.

It is a happy number.

123597945 is a `hidden beast` number, since 12 + 3 + 597 + 9 + 45 = 666.

It is not a de Polignac number, because 123597945 - 2⁸ = 123597689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 123597945.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29682 + ... + 33588.

It is an arithmetic number, because the mean of its divisors is an integer number (4826380).

Almost surely, 2^123597945 is an apocalyptic number.

123597945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123597945 is a deficient number, since it is larger than the sum of its proper divisors (108068295).

123597945 is a wasteful number, since it uses less digits than its factorization.

123597945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974 (or 3971 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 123597945 is about 11117.4612659546. The cubic root of 123597945 is about 498.1235600892.

The spelling of 123597945 in words is "one hundred twenty-three million, five hundred ninety-seven thousand, nine hundred forty-five".