121443042 has 16 divisors (see below), whose sum is σ = 277584192. Its totient is φ = 34698000.

The previous prime is 121443031. The next prime is 121443043. The reversal of 121443042 is 240344121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121443043) 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, 1445709 + ... + 1445792.

It is an arithmetic number, because the mean of its divisors is an integer number (17349012).

Almost surely, 2^121443042 is an apocalyptic number.

121443042 is an abundant number, since it is smaller than the sum of its proper divisors (156141150).

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

121443042 is a wasteful number, since it uses less digits than its factorization.

121443042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891513.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121443042 is about 11020.1198723063. The cubic root of 121443042 is about 495.2116796928.

Adding to 121443042 its reverse (240344121), we get a palindrome (361787163).

The spelling of 121443042 in words is "one hundred twenty-one million, four hundred forty-three thousand, forty-two".