121442375 has 16 divisors (see below), whose sum is σ = 152139936. Its totient is φ = 96782400.

The previous prime is 121442359. The next prime is 121442381. The reversal of 121442375 is 573244121.

It is not a de Polignac number, because 121442375 - 2⁴ = 121442359 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33659 + ... + 37091.

It is an arithmetic number, because the mean of its divisors is an integer number (9508746).

Almost surely, 2^121442375 is an apocalyptic number.

121442375 is a deficient number, since it is larger than the sum of its proper divisors (30697561).

121442375 is an equidigital number, since it uses as much as digits as its factorization.

121442375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731 (or 3721 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 121442375 is about 11020.0896094360. The cubic root of 121442375 is about 495.2107730763.

Adding to 121442375 its reverse (573244121), we get a palindrome (694686496).

The spelling of 121442375 in words is "one hundred twenty-one million, four hundred forty-two thousand, three hundred seventy-five".