121142444 has 12 divisors (see below), whose sum is σ = 213066000. Its totient is φ = 60266448.

The previous prime is 121142443. The next prime is 121142447. The reversal of 121142444 is 444241121.

It is a super-3 number, since 3×121142444³ (a number of 25 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121142443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75299 + ... + 76890.

It is an arithmetic number, because the mean of its divisors is an integer number (17755500).

Almost surely, 2^121142444 is an apocalyptic number.

It is an amenable number.

121142444 is a deficient number, since it is larger than the sum of its proper divisors (91923556).

121142444 is a wasteful number, since it uses less digits than its factorization.

121142444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152392 (or 152390 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 121142444 is about 11006.4728228438. The cubic root of 121142444 is about 494.8027564993.

Adding to 121142444 its reverse (444241121), we get a palindrome (565383565).

The spelling of 121142444 in words is "one hundred twenty-one million, one hundred forty-two thousand, four hundred forty-four".