121931450 has 12 divisors (see below), whose sum is σ = 226792590. Its totient is φ = 48772560.

The previous prime is 121931449. The next prime is 121931473. The reversal of 121931450 is 54139121.

It can be written as a sum of positive squares in 3 ways, for example, as 95316169 + 26615281 = 9763^2 + 5159^2 .

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 5 ways as a sum of consecutive naturals, for example, 1219265 + ... + 1219364.

Almost surely, 2^121931450 is an apocalyptic number.

121931450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121931450 is a deficient number, since it is larger than the sum of its proper divisors (104861140).

121931450 is a wasteful number, since it uses less digits than its factorization.

121931450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438641 (or 2438636 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 121931450 is about 11042.2574684708. The cubic root of 121931450 is about 495.8746566945.

The spelling of 121931450 in words is "one hundred twenty-one million, nine hundred thirty-one thousand, four hundred fifty".