121242472 has 32 divisors (see below), whose sum is σ = 246607200. Its totient is φ = 55548864.

The previous prime is 121242461. The next prime is 121242481. The reversal of 121242472 is 274242121.

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, 10263 + ... + 18649.

It is an arithmetic number, because the mean of its divisors is an integer number (7706475).

Almost surely, 2^121242472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121242472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123303600).

121242472 is an abundant number, since it is smaller than the sum of its proper divisors (125364728).

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

121242472 is a wasteful number, since it uses less digits than its factorization.

121242472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8545 (or 8541 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 121242472 is about 11011.0159385953. The cubic root of 121242472 is about 494.9389061763.

Adding to 121242472 its reverse (274242121), we get a palindrome (395484593).

The spelling of 121242472 in words is "one hundred twenty-one million, two hundred forty-two thousand, four hundred seventy-two".