121534242 has 16 divisors (see below), whose sum is σ = 243637632. Its totient is φ = 40416560.

The previous prime is 121534219. The next prime is 121534249. The reversal of 121534242 is 242435121.

It is not an unprimeable number, because it can be changed into a prime (121534249) 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, 20913 + ... + 26084.

It is an arithmetic number, because the mean of its divisors is an integer number (15227352).

Almost surely, 2^121534242 is an apocalyptic number.

121534242 is an abundant number, since it is smaller than the sum of its proper divisors (122103390).

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

121534242 is a wasteful number, since it uses less digits than its factorization.

121534242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47433.

The product of its digits is 1920, while the sum is 24.

The square root of 121534242 is about 11024.2569817653. The cubic root of 121534242 is about 495.3356116029.

Adding to 121534242 its reverse (242435121), we get a palindrome (363969363).

The spelling of 121534242 in words is "one hundred twenty-one million, five hundred thirty-four thousand, two hundred forty-two".