121004442 has 40 divisors (see below), whose sum is σ = 292001556. Its totient is φ = 37231488.

The previous prime is 121004441. The next prime is 121004447. The reversal of 121004442 is 244400121.

It can be written as a sum of positive squares in 2 ways, for example, as 120362841 + 641601 = 10971^2 + 801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121004441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26623 + ... + 30834.

Almost surely, 2^121004442 is an apocalyptic number.

121004442 is an abundant number, since it is smaller than the sum of its proper divisors (170997114).

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

121004442 is a wasteful number, since it uses less digits than its factorization.

121004442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57484 (or 57475 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 121004442 is about 11000.2019072379. The cubic root of 121004442 is about 494.6147967358.

Adding to 121004442 its reverse (244400121), we get a palindrome (365404563).

The spelling of 121004442 in words is "one hundred twenty-one million, four thousand, four hundred forty-two".