121628254 has 16 divisors (see below), whose sum is σ = 201833856. Its totient is φ = 54506200.

The previous prime is 121628231. The next prime is 121628261. The reversal of 121628254 is 452826121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37372 + ... + 40495.

It is an arithmetic number, because the mean of its divisors is an integer number (12614616).

Almost surely, 2^121628254 is an apocalyptic number.

121628254 is a deficient number, since it is larger than the sum of its proper divisors (80205602).

121628254 is a wasteful number, since it uses less digits than its factorization.

121628254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77951.

The product of its digits is 7680, while the sum is 31.

The square root of 121628254 is about 11028.5200276374. The cubic root of 121628254 is about 495.4632998675.

The spelling of 121628254 in words is "one hundred twenty-one million, six hundred twenty-eight thousand, two hundred fifty-four".