814240121 has 4 divisors (see below), whose sum is σ = 814584192. Its totient is φ = 813896052.

The previous prime is 814240111. The next prime is 814240127. The reversal of 814240121 is 121042418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 814240121 - 2⁶ = 814240057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814240127) 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, 168461 + ... + 173226.

It is an arithmetic number, because the mean of its divisors is an integer number (203646048).

Almost surely, 2^814240121 is an apocalyptic number.

It is an amenable number.

814240121 is a deficient number, since it is larger than the sum of its proper divisors (344071).

814240121 is a wasteful number, since it uses less digits than its factorization.

814240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344070.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 814240121 is about 28534.8930434302. The cubic root of 814240121 is about 933.7934702082.

Adding to 814240121 its reverse (121042418), we get a palindrome (935282539).

The spelling of 814240121 in words is "eight hundred fourteen million, two hundred forty thousand, one hundred twenty-one".