123645387 has 8 divisors (see below), whose sum is σ = 164961280. Its totient is φ = 82379880.

The previous prime is 123645383. The next prime is 123645413. The reversal of 123645387 is 783546321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123645387 - 2² = 123645383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123645383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6439 + ... + 16992.

It is an arithmetic number, because the mean of its divisors is an integer number (20620160).

Almost surely, 2^123645387 is an apocalyptic number.

123645387 is a deficient number, since it is larger than the sum of its proper divisors (41315893).

123645387 is a wasteful number, since it uses less digits than its factorization.

123645387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25193.

The product of its digits is 120960, while the sum is 39.

The square root of 123645387 is about 11119.5947318236. The cubic root of 123645387 is about 498.1872854069.

The spelling of 123645387 in words is "one hundred twenty-three million, six hundred forty-five thousand, three hundred eighty-seven".