121625841 has 4 divisors (see below), whose sum is σ = 162167792. Its totient is φ = 81083892.

The previous prime is 121625807. The next prime is 121625843. The reversal of 121625841 is 148526121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121625841 - 2²³ = 113237233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121625799 and 121625808.

It is not an unprimeable number, because it can be changed into a prime (121625843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20270971 + ... + 20270976.

It is an arithmetic number, because the mean of its divisors is an integer number (40541948).

Almost surely, 2^121625841 is an apocalyptic number.

It is an amenable number.

121625841 is a deficient number, since it is larger than the sum of its proper divisors (40541951).

121625841 is an equidigital number, since it uses as much as digits as its factorization.

121625841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40541950.

The product of its digits is 3840, while the sum is 30.

The square root of 121625841 is about 11028.4106289166. The cubic root of 121625841 is about 495.4600233239.

The spelling of 121625841 in words is "one hundred twenty-one million, six hundred twenty-five thousand, eight hundred forty-one".