121495860 has 36 divisors (see below), whose sum is σ = 368537988. Its totient is φ = 32398848.

The previous prime is 121495859. The next prime is 121495879. The reversal of 121495860 is 68594121.

It can be written as a sum of positive squares in 2 ways, for example, as 74545956 + 46949904 = 8634^2 + 6852^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×121495860² = 29522487994279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 337309 + ... + 337668.

Almost surely, 2^121495860 is an apocalyptic number.

121495860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121495860 is an abundant number, since it is smaller than the sum of its proper divisors (247042128).

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

121495860 is a wasteful number, since it uses less digits than its factorization.

121495860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674992 (or 674987 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 121495860 is about 11022.5160467109. The cubic root of 121495860 is about 495.2834617646.

The spelling of 121495860 in words is "one hundred twenty-one million, four hundred ninety-five thousand, eight hundred sixty".