121477457 has 2 divisors, whose sum is σ = 121477458. Its totient is φ = 121477456.

The previous prime is 121477453. The next prime is 121477463. The reversal of 121477457 is 754774121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112381201 + 9096256 = 10601^2 + 3016^2 .

It is a cyclic number.

It is not a de Polignac number, because 121477457 - 2² = 121477453 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121477457.

It is not a weakly prime, because it can be changed into another prime (121477453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60738728 + 60738729.

It is an arithmetic number, because the mean of its divisors is an integer number (60738729).

Almost surely, 2^121477457 is an apocalyptic number.

It is an amenable number.

121477457 is a deficient number, since it is larger than the sum of its proper divisors (1).

121477457 is an equidigital number, since it uses as much as digits as its factorization.

121477457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54880, while the sum is 38.

The square root of 121477457 is about 11021.6812238424. The cubic root of 121477457 is about 495.2584536099.

The spelling of 121477457 in words is "one hundred twenty-one million, four hundred seventy-seven thousand, four hundred fifty-seven".