121421452 has 12 divisors (see below), whose sum is σ = 212995216. Its totient is φ = 60565680.

The previous prime is 121421423. The next prime is 121421453. The reversal of 121421452 is 254124121.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121421453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34368 + ... + 37735.

Almost surely, 2^121421452 is an apocalyptic number.

It is an amenable number.

121421452 is a deficient number, since it is larger than the sum of its proper divisors (91573764).

121421452 is a wasteful number, since it uses less digits than its factorization.

121421452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72528 (or 72526 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 121421452 is about 11019.1402568440. The cubic root of 121421452 is about 495.1823319052.

Adding to 121421452 its reverse (254124121), we get a palindrome (375545573).

The spelling of 121421452 in words is "one hundred twenty-one million, four hundred twenty-one thousand, four hundred fifty-two".