121030524240 has 80 divisors (see below), whose sum is σ = 375246304128. Its totient is φ = 32270361088.

The previous prime is 121030524227. The next prime is 121030524247. The reversal of 121030524240 is 42425030121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121030524240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030524247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946269 + ... + 2007491.

Almost surely, 2^121030524240 is an apocalyptic number.

121030524240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121030524240 is an abundant number, since it is smaller than the sum of its proper divisors (254215779888).

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

121030524240 is a wasteful number, since it uses less digits than its factorization.

121030524240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69476 (or 69470 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 121030524240 its reverse (42425030121), we get a palindrome (163455554361).

The spelling of 121030524240 in words is "one hundred twenty-one billion, thirty million, five hundred twenty-four thousand, two hundred forty".