121442425 has 12 divisors (see below), whose sum is σ = 162172780. Its totient is φ = 89680320.

The previous prime is 121442389. The next prime is 121442437. The reversal of 121442425 is 524244121.

It can be written as a sum of positive squares in 6 ways, for example, as 30869136 + 90573289 = 5556^2 + 9517^2 .

It is not a de Polignac number, because 121442425 - 2⁷ = 121442297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 121442425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186510 + ... + 187159.

Almost surely, 2^121442425 is an apocalyptic number.

It is an amenable number.

121442425 is a deficient number, since it is larger than the sum of its proper divisors (40730355).

121442425 is a wasteful number, since it uses less digits than its factorization.

121442425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373692 (or 373687 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 121442425 is about 11020.0918780199. The cubic root of 121442425 is about 495.2108410387.

Adding to 121442425 its reverse (524244121), we get a palindrome (645686546).

The spelling of 121442425 in words is "one hundred twenty-one million, four hundred forty-two thousand, four hundred twenty-five".