121825457 has 16 divisors (see below), whose sum is σ = 139829760. Its totient is φ = 105264192.

The previous prime is 121825439. The next prime is 121825463. The reversal of 121825457 is 754528121.

It is not a de Polignac number, because 121825457 - 2¹⁰ = 121824433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121821457) 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, 9719 + ... + 18387.

It is an arithmetic number, because the mean of its divisors is an integer number (8739360).

Almost surely, 2^121825457 is an apocalyptic number.

It is an amenable number.

121825457 is a deficient number, since it is larger than the sum of its proper divisors (18004303).

121825457 is a wasteful number, since it uses less digits than its factorization.

121825457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752.

The product of its digits is 22400, while the sum is 35.

The square root of 121825457 is about 11037.4569987837. The cubic root of 121825457 is about 495.7309298177.

The spelling of 121825457 in words is "one hundred twenty-one million, eight hundred twenty-five thousand, four hundred fifty-seven".