121671425 has 6 divisors (see below), whose sum is σ = 150872598. Its totient is φ = 97337120.

The previous prime is 121671409. The next prime is 121671479. The reversal of 121671425 is 524176121.

It can be written as a sum of positive squares in 3 ways, for example, as 473344 + 121198081 = 688^2 + 11009^2 .

It is not a de Polignac number, because 121671425 - 2⁴ = 121671409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2433404 + ... + 2433453.

It is an arithmetic number, because the mean of its divisors is an integer number (25145433).

Almost surely, 2^121671425 is an apocalyptic number.

It is an amenable number.

121671425 is a deficient number, since it is larger than the sum of its proper divisors (29201173).

121671425 is an equidigital number, since it uses as much as digits as its factorization.

121671425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866867 (or 4866862 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 121671425 is about 11030.4770975693. The cubic root of 121671425 is about 495.5219132111.

The spelling of 121671425 in words is "one hundred twenty-one million, six hundred seventy-one thousand, four hundred twenty-five".