121594890 has 16 divisors (see below), whose sum is σ = 291827808. Its totient is φ = 32425296.

The previous prime is 121594867. The next prime is 121594909. The reversal of 121594890 is 98495121.

It is a super-2 number, since 2×121594890² = 29570634548224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026552 + ... + 2026611.

It is an arithmetic number, because the mean of its divisors is an integer number (18239238).

Almost surely, 2^121594890 is an apocalyptic number.

121594890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121594890 is an abundant number, since it is smaller than the sum of its proper divisors (170232918).

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

121594890 is a wasteful number, since it uses less digits than its factorization.

121594890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053173.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 121594890 is about 11027.0073002606. The cubic root of 121594890 is about 495.4179920032.

The spelling of 121594890 in words is "one hundred twenty-one million, five hundred ninety-four thousand, eight hundred ninety".