105120004055 has 32 divisors (see below), whose sum is σ = 140106086208. Its totient is φ = 75069388800.

The previous prime is 105120004039. The next prime is 105120004111. The reversal of 105120004055 is 550400021501.

It is a happy number.

It is not a de Polignac number, because 105120004055 - 2⁴ = 105120004039 is a prime.

It is a super-2 number, since 2×105120004055² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105120004055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1963097 + ... + 2015933.

It is an arithmetic number, because the mean of its divisors is an integer number (4378315194).

Almost surely, 2^105120004055 is an apocalyptic number.

105120004055 is a deficient number, since it is larger than the sum of its proper divisors (34986082153).

105120004055 is a wasteful number, since it uses less digits than its factorization.

105120004055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53507.

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 105120004055 its reverse (550400021501), we get a palindrome (655520025556).

The spelling of 105120004055 in words is "one hundred five billion, one hundred twenty million, four thousand, fifty-five".