121045830 has 32 divisors (see below), whose sum is σ = 291773664. Its totient is φ = 32138496.

The previous prime is 121045829. The next prime is 121045843. The reversal of 121045830 is 38540121.

It is a self number, because there is not a number n which added to its sum of digits gives 121045830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669 + ... + 15648.

It is an arithmetic number, because the mean of its divisors is an integer number (9117927).

Almost surely, 2^121045830 is an apocalyptic number.

121045830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121045830 is an abundant number, since it is smaller than the sum of its proper divisors (170727834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121045830 is a wasteful number, since it uses less digits than its factorization.

121045830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17560.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121045830 is about 11002.0829845989. The cubic root of 121045830 is about 494.6711824997.

Adding to 121045830 its reverse (38540121), we get a palindrome (159585951).

The spelling of 121045830 in words is "one hundred twenty-one million, forty-five thousand, eight hundred thirty".