121024140 has 48 divisors (see below), whose sum is σ = 339655680. Its totient is φ = 32198080.

The previous prime is 121024133. The next prime is 121024157. The reversal of 121024140 is 41420121.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 26635 + ... + 30845.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^121024140 is an apocalyptic number.

121024140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121024140 is an abundant number, since it is smaller than the sum of its proper divisors (218631540).

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

121024140 is a wasteful number, since it uses less digits than its factorization.

121024140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 121024140 is about 11001.0972180051. The cubic root of 121024140 is about 494.6416343005.

Adding to 121024140 its reverse (41420121), we get a palindrome (162444261).

The spelling of 121024140 in words is "one hundred twenty-one million, twenty-four thousand, one hundred forty".