121435240 has 32 divisors (see below), whose sum is σ = 273573000. Its totient is φ = 48513024.

The previous prime is 121435207. The next prime is 121435271. The reversal of 121435240 is 42534121.

It can be written as a sum of positive squares in 4 ways, for example, as 34833604 + 86601636 = 5902^2 + 9306^2 .

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, 43816 + ... + 46504.

Almost surely, 2^121435240 is an apocalyptic number.

121435240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121435240 is an abundant number, since it is smaller than the sum of its proper divisors (152137760).

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

121435240 is a wasteful number, since it uses less digits than its factorization.

121435240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829 (or 3825 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 121435240 is about 11019.7658777308. The cubic root of 121435240 is about 495.2010746547.

Adding to 121435240 its reverse (42534121), we get a palindrome (163969361).

The spelling of 121435240 in words is "one hundred twenty-one million, four hundred thirty-five thousand, two hundred forty".