121582450 has 24 divisors (see below), whose sum is σ = 246702960. Its totient is φ = 44211600.

The previous prime is 121582427. The next prime is 121582493. The reversal of 121582450 is 54285121.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 109980 + ... + 111079.

It is an arithmetic number, because the mean of its divisors is an integer number (10279290).

Almost surely, 2^121582450 is an apocalyptic number.

121582450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121582450 is an abundant number, since it is smaller than the sum of its proper divisors (125120510).

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

121582450 is a wasteful number, since it uses less digits than its factorization.

121582450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221082 (or 221077 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 121582450 is about 11026.4432161962. The cubic root of 121582450 is about 495.4010965289.

The spelling of 121582450 in words is "one hundred twenty-one million, five hundred eighty-two thousand, four hundred fifty".