123578855 has 8 divisors (see below), whose sum is σ = 148381632. Its totient is φ = 98805088.

The previous prime is 123578789. The next prime is 123578857. The reversal of 123578855 is 558875321.

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

It is a cyclic number.

It is not a de Polignac number, because 123578855 - 2¹⁴ = 123562471 is a prime.

It is a super-2 number, since 2×123578855² = 30543466806222050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123578857) 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, 3602 + ... + 16128.

It is an arithmetic number, because the mean of its divisors is an integer number (18547704).

Almost surely, 2^123578855 is an apocalyptic number.

123578855 is a deficient number, since it is larger than the sum of its proper divisors (24802777).

123578855 is a wasteful number, since it uses less digits than its factorization.

123578855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14505.

The product of its digits is 336000, while the sum is 44.

The square root of 123578855 is about 11116.6026734790. The cubic root of 123578855 is about 498.0979133079.

It can be divided in two parts, 12357 and 8855, that added together give a palindrome (21212).

The spelling of 123578855 in words is "one hundred twenty-three million, five hundred seventy-eight thousand, eight hundred fifty-five".