121450440 has 32 divisors (see below), whose sum is σ = 364351680. Its totient is φ = 32386752.

The previous prime is 121450429. The next prime is 121450471. The reversal of 121450440 is 44054121.

It is a happy number.

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, 505924 + ... + 506163.

It is an arithmetic number, because the mean of its divisors is an integer number (11385990).

Almost surely, 2^121450440 is an apocalyptic number.

121450440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121450440 is an abundant number, since it is smaller than the sum of its proper divisors (242901240).

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

121450440 is a wasteful number, since it uses less digits than its factorization.

121450440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012101 (or 1012097 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 121450440 is about 11020.4555259753. The cubic root of 121450440 is about 495.2217351656.

The spelling of 121450440 in words is "one hundred twenty-one million, four hundred fifty thousand, four hundred forty".