121425877 has 2 divisors, whose sum is σ = 121425878. Its totient is φ = 121425876.

The previous prime is 121425859. The next prime is 121425893. The reversal of 121425877 is 778524121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81974916 + 39450961 = 9054^2 + 6281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121425877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121425277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60712938 + 60712939.

It is an arithmetic number, because the mean of its divisors is an integer number (60712939).

Almost surely, 2^121425877 is an apocalyptic number.

It is an amenable number.

121425877 is a deficient number, since it is larger than the sum of its proper divisors (1).

121425877 is an equidigital number, since it uses as much as digits as its factorization.

121425877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 37.

The square root of 121425877 is about 11019.3410420043. The cubic root of 121425877 is about 495.1883471937.

Adding to 121425877 its reverse (778524121), we get a palindrome (899949998).

The spelling of 121425877 in words is "one hundred twenty-one million, four hundred twenty-five thousand, eight hundred seventy-seven".