880121405 has 16 divisors (see below), whose sum is σ = 1094315184. Its totient is φ = 678988800.

The previous prime is 880121357. The next prime is 880121413. The reversal of 880121405 is 504121088.

It can be written as a sum of positive squares in 8 ways, for example, as 465124 + 879656281 = 682^2 + 29659^2 .

It is a de Polignac number, because none of the positive numbers 2^k-880121405 is a prime.

It is a super-2 number, since 2×880121405² = 1549227375078348050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146 + ... + 41955.

It is an arithmetic number, because the mean of its divisors is an integer number (68394699).

Almost surely, 2^880121405 is an apocalyptic number.

It is an amenable number.

880121405 is a deficient number, since it is larger than the sum of its proper divisors (214193779).

880121405 is a wasteful number, since it uses less digits than its factorization.

880121405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42256.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 880121405 is about 29666.8401586687. The cubic root of 880121405 is about 958.3280377443.

The spelling of 880121405 in words is "eight hundred eighty million, one hundred twenty-one thousand, four hundred five".