123963855 has 16 divisors (see below), whose sum is σ = 201060960. Its totient is φ = 65207808.

The previous prime is 123963841. The next prime is 123963901. The reversal of 123963855 is 558369321.

It is not a de Polignac number, because 123963855 - 2¹⁶ = 123898319 is a prime.

It is a super-2 number, since 2×123963855² = 30734074692922050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55510 + ... + 57699.

It is an arithmetic number, because the mean of its divisors is an integer number (12566310).

Almost surely, 2^123963855 is an apocalyptic number.

123963855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123963855 is a deficient number, since it is larger than the sum of its proper divisors (77097105).

123963855 is a wasteful number, since it uses less digits than its factorization.

123963855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113290.

The product of its digits is 194400, while the sum is 42.

The square root of 123963855 is about 11133.9056489625. The cubic root of 123963855 is about 498.6146384250.

The spelling of 123963855 in words is "one hundred twenty-three million, nine hundred sixty-three thousand, eight hundred fifty-five".