456121823 has 2 divisors, whose sum is σ = 456121824. Its totient is φ = 456121822.

The previous prime is 456121819. The next prime is 456121837. The reversal of 456121823 is 328121654.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 456121823 - 2² = 456121819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 456121823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456121423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228060911 + 228060912.

It is an arithmetic number, because the mean of its divisors is an integer number (228060912).

Almost surely, 2^456121823 is an apocalyptic number.

456121823 is a deficient number, since it is larger than the sum of its proper divisors (1).

456121823 is an equidigital number, since it uses as much as digits as its factorization.

456121823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 456121823 is about 21357.0087559096. The cubic root of 456121823 is about 769.7687634204.

The spelling of 456121823 in words is "four hundred fifty-six million, one hundred twenty-one thousand, eight hundred twenty-three".