123997055 has 64 divisors (see below), whose sum is σ = 193536000. Its totient is φ = 74165760.

The previous prime is 123997043. The next prime is 123997061. The reversal of 123997055 is 550799321.

It is not a de Polignac number, because 123997055 - 2⁴ = 123997039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 832121 + ... + 832269.

It is an arithmetic number, because the mean of its divisors is an integer number (3024000).

Almost surely, 2^123997055 is an apocalyptic number.

123997055 is a deficient number, since it is larger than the sum of its proper divisors (69538945).

123997055 is a wasteful number, since it uses less digits than its factorization.

123997055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 123997055 is about 11135.3964904713. The cubic root of 123997055 is about 498.6591474431.

The spelling of 123997055 in words is "one hundred twenty-three million, nine hundred ninety-seven thousand, fifty-five".