121435442 has 4 divisors (see below), whose sum is σ = 182153166. Its totient is φ = 60717720.

The previous prime is 121435439. The next prime is 121435453. The reversal of 121435442 is 244534121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113656921 + 7778521 = 10661^2 + 2789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30358859 + ... + 30358862.

Almost surely, 2^121435442 is an apocalyptic number.

121435442 is a deficient number, since it is larger than the sum of its proper divisors (60717724).

121435442 is an equidigital number, since it uses as much as digits as its factorization.

121435442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60717723.

The product of its digits is 3840, while the sum is 26.

The square root of 121435442 is about 11019.7750430760. The cubic root of 121435442 is about 495.2013492333.

Adding to 121435442 its reverse (244534121), we get a palindrome (365969563).

The spelling of 121435442 in words is "one hundred twenty-one million, four hundred thirty-five thousand, four hundred forty-two".