121490240 has 112 divisors (see below), whose sum is σ = 307628544. Its totient is φ = 45619200.

The previous prime is 121490227. The next prime is 121490273. The reversal of 121490240 is 42094121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366875 + ... + 367205.

Almost surely, 2^121490240 is an apocalyptic number.

121490240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121490240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153814272).

121490240 is an abundant number, since it is smaller than the sum of its proper divisors (186138304).

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

121490240 is a wasteful number, since it uses less digits than its factorization.

121490240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 121490240 is about 11022.2611110425. The cubic root of 121490240 is about 495.2758249174.

The spelling of 121490240 in words is "one hundred twenty-one million, four hundred ninety thousand, two hundred forty".