478303121 has 2 divisors, whose sum is σ = 478303122. Its totient is φ = 478303120.

The previous prime is 478303117. The next prime is 478303127. The reversal of 478303121 is 121303874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284091025 + 194212096 = 16855^2 + 13936^2 .

It is a cyclic number.

It is not a de Polignac number, because 478303121 - 2² = 478303117 is a prime.

It is not a weakly prime, because it can be changed into another prime (478303127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239151560 + 239151561.

It is an arithmetic number, because the mean of its divisors is an integer number (239151561).

Almost surely, 2^478303121 is an apocalyptic number.

It is an amenable number.

478303121 is a deficient number, since it is larger than the sum of its proper divisors (1).

478303121 is an equidigital number, since it uses as much as digits as its factorization.

478303121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 478303121 is about 21870.1422263322. The cubic root of 478303121 is about 782.0497920951.

Adding to 478303121 its reverse (121303874), we get a palindrome (599606995).

The spelling of 478303121 in words is "four hundred seventy-eight million, three hundred three thousand, one hundred twenty-one".