468157021 has 2 divisors, whose sum is σ = 468157022. Its totient is φ = 468157020.

The previous prime is 468157013. The next prime is 468157037. The reversal of 468157021 is 120751864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291931396 + 176225625 = 17086^2 + 13275^2 .

It is a cyclic number.

It is not a de Polignac number, because 468157021 - 2³ = 468157013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (468154021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234078510 + 234078511.

It is an arithmetic number, because the mean of its divisors is an integer number (234078511).

Almost surely, 2^468157021 is an apocalyptic number.

It is an amenable number.

468157021 is a deficient number, since it is larger than the sum of its proper divisors (1).

468157021 is an equidigital number, since it uses as much as digits as its factorization.

468157021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 468157021 is about 21636.9364975728. The cubic root of 468157021 is about 776.4804285125.

The spelling of 468157021 in words is "four hundred sixty-eight million, one hundred fifty-seven thousand, twenty-one".