121575441 has 16 divisors (see below), whose sum is σ = 176965376. Its totient is φ = 73789056.

The previous prime is 121575427. The next prime is 121575463. The reversal of 121575441 is 144575121.

It is not a de Polignac number, because 121575441 - 2⁵ = 121575409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121575399 and 121575408.

It is not an unprimeable number, because it can be changed into a prime (121505441) by changing a digit.

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, 18505 + ... + 24198.

It is an arithmetic number, because the mean of its divisors is an integer number (11060336).

Almost surely, 2^121575441 is an apocalyptic number.

It is an amenable number.

121575441 is a deficient number, since it is larger than the sum of its proper divisors (55389935).

121575441 is a wasteful number, since it uses less digits than its factorization.

121575441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42792.

The product of its digits is 5600, while the sum is 30.

The square root of 121575441 is about 11026.1253847396. The cubic root of 121575441 is about 495.3915766983.

The spelling of 121575441 in words is "one hundred twenty-one million, five hundred seventy-five thousand, four hundred forty-one".