121425949 has 2 divisors, whose sum is σ = 121425950. Its totient is φ = 121425948.

The previous prime is 121425943. The next prime is 121425973. The reversal of 121425949 is 949524121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 21325924 = 10005^2 + 4618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121425949 is a prime.

It is a super-2 number, since 2×121425949² = 29488522181101202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121425943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60712974 + 60712975.

It is an arithmetic number, because the mean of its divisors is an integer number (60712975).

Almost surely, 2^121425949 is an apocalyptic number.

It is an amenable number.

121425949 is a deficient number, since it is larger than the sum of its proper divisors (1).

121425949 is an equidigital number, since it uses as much as digits as its factorization.

121425949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 121425949 is about 11019.3443089868. The cubic root of 121425949 is about 495.1884450684.

The spelling of 121425949 in words is "one hundred twenty-one million, four hundred twenty-five thousand, nine hundred forty-nine".