121255450 has 24 divisors (see below), whose sum is σ = 231039900. Its totient is φ = 47318400.

The previous prime is 121255391. The next prime is 121255487. The reversal of 121255450 is 54552121.

It can be written as a sum of positive squares in 6 ways, for example, as 51883209 + 69372241 = 7203^2 + 8329^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27525 + ... + 31624.

Almost surely, 2^121255450 is an apocalyptic number.

121255450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121255450 is a deficient number, since it is larger than the sum of its proper divisors (109784450).

121255450 is a wasteful number, since it uses less digits than its factorization.

121255450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59202 (or 59197 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 121255450 is about 11011.6052417438. The cubic root of 121255450 is about 494.9565652464.

The spelling of 121255450 in words is "one hundred twenty-one million, two hundred fifty-five thousand, four hundred fifty".