121435457 has 12 divisors (see below), whose sum is σ = 143451504. Its totient is φ = 101902320.

The previous prime is 121435453. The next prime is 121435459. The reversal of 121435457 is 754534121.

It is not a de Polignac number, because 121435457 - 2² = 121435453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121435453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30803 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (11954292).

Almost surely, 2^121435457 is an apocalyptic number.

It is an amenable number.

121435457 is a deficient number, since it is larger than the sum of its proper divisors (22016047).

121435457 is a wasteful number, since it uses less digits than its factorization.

121435457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65360 (or 65347 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 121435457 is about 11019.7757236706. The cubic root of 121435457 is about 495.2013696228.

Adding to 121435457 its reverse (754534121), we get a palindrome (875969578).

The spelling of 121435457 in words is "one hundred twenty-one million, four hundred thirty-five thousand, four hundred fifty-seven".