120121240 has 32 divisors (see below), whose sum is σ = 277580880. Its totient is φ = 46749312.

The previous prime is 120121229. The next prime is 120121241. The reversal of 120121240 is 42121021.

It is a happy number.

It is a super-2 number, since 2×120121240² = 28858224598275200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120121240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39102 + ... + 42061.

Almost surely, 2^120121240 is an apocalyptic number.

120121240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121240 is an abundant number, since it is smaller than the sum of its proper divisors (157459640).

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

120121240 is a wasteful number, since it uses less digits than its factorization.

120121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81211 (or 81207 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120121240 is about 10959.9835766300. The cubic root of 120121240 is about 493.4084720387.

Adding to 120121240 its reverse (42121021), we get a palindrome (162242261).

The spelling of 120121240 in words is "one hundred twenty million, one hundred twenty-one thousand, two hundred forty".