121425365 has 4 divisors (see below), whose sum is σ = 145710444. Its totient is φ = 97140288.

The previous prime is 121425347. The next prime is 121425377. The reversal of 121425365 is 563524121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46117681 + 75307684 = 6791^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 121425365 - 2¹² = 121421269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12142532 + ... + 12142541.

It is an arithmetic number, because the mean of its divisors is an integer number (36427611).

Almost surely, 2^121425365 is an apocalyptic number.

It is an amenable number.

121425365 is a deficient number, since it is larger than the sum of its proper divisors (24285079).

121425365 is an equidigital number, since it uses as much as digits as its factorization.

121425365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24285078.

The product of its digits is 7200, while the sum is 29.

The square root of 121425365 is about 11019.3178101006. The cubic root of 121425365 is about 495.1876511950.

Adding to 121425365 its reverse (563524121), we get a palindrome (684949486).

The spelling of 121425365 in words is "one hundred twenty-one million, four hundred twenty-five thousand, three hundred sixty-five".