121425533 has 16 divisors (see below), whose sum is σ = 129136896. Its totient is φ = 113942400.

The previous prime is 121425511. The next prime is 121425539. The reversal of 121425533 is 335524121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121425533 - 2⁸ = 121425277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121425539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387785 + ... + 388097.

It is an arithmetic number, because the mean of its divisors is an integer number (8071056).

Almost surely, 2^121425533 is an apocalyptic number.

It is an amenable number.

121425533 is a deficient number, since it is larger than the sum of its proper divisors (7711363).

121425533 is a wasteful number, since it uses less digits than its factorization.

121425533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its digits is 3600, while the sum is 26.

The square root of 121425533 is about 11019.3254330744. The cubic root of 121425533 is about 495.1878795698.

Adding to 121425533 its reverse (335524121), we get a palindrome (456949654).

The spelling of 121425533 in words is "one hundred twenty-one million, four hundred twenty-five thousand, five hundred thirty-three".