121304457 has 12 divisors (see below), whose sum is σ = 180870144. Its totient is φ = 78260760.

The previous prime is 121304453. The next prime is 121304467. The reversal of 121304457 is 754403121.

121304457 is a `hidden beast` number, since 1 + 213 + 0 + 445 + 7 = 666.

It is not a de Polignac number, because 121304457 - 2² = 121304453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121304457.

It is not an unprimeable number, because it can be changed into a prime (121304453) 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, 217113 + ... + 217670.

It is an arithmetic number, because the mean of its divisors is an integer number (15072512).

Almost surely, 2^121304457 is an apocalyptic number.

It is an amenable number.

121304457 is a deficient number, since it is larger than the sum of its proper divisors (59565687).

121304457 is a wasteful number, since it uses less digits than its factorization.

121304457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434820 (or 434817 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 121304457 is about 11013.8302601774. The cubic root of 121304457 is about 495.0232373542.

Adding to 121304457 its reverse (754403121), we get a palindrome (875707578).

The spelling of 121304457 in words is "one hundred twenty-one million, three hundred four thousand, four hundred fifty-seven".