121442124 has 24 divisors (see below), whose sum is σ = 283823680. Its totient is φ = 40415184.

The previous prime is 121442107. The next prime is 121442149. The reversal of 121442124 is 421244121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121442124.

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, 154 + ... + 15585.

Almost surely, 2^121442124 is an apocalyptic number.

It is an amenable number.

121442124 is an abundant number, since it is smaller than the sum of its proper divisors (162381556).

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

121442124 is a wasteful number, since it uses less digits than its factorization.

121442124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16389 (or 16387 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 121442124 is about 11020.0782211380. The cubic root of 121442124 is about 495.2104319049.

Adding to 121442124 its reverse (421244121), we get a palindrome (542686245).

The spelling of 121442124 in words is "one hundred twenty-one million, four hundred forty-two thousand, one hundred twenty-four".