420263401 has 2 divisors, whose sum is σ = 420263402. Its totient is φ = 420263400.

The previous prime is 420263387. The next prime is 420263507. The reversal of 420263401 is 104362024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387499225 + 32764176 = 19685^2 + 5724^2 .

It is a cyclic number.

It is not a de Polignac number, because 420263401 - 2⁵ = 420263369 is a prime.

It is not a weakly prime, because it can be changed into another prime (420267401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210131700 + 210131701.

It is an arithmetic number, because the mean of its divisors is an integer number (210131701).

Almost surely, 2^420263401 is an apocalyptic number.

It is an amenable number.

420263401 is a deficient number, since it is larger than the sum of its proper divisors (1).

420263401 is an equidigital number, since it uses as much as digits as its factorization.

420263401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420263401 is about 20500.3268510529. The cubic root of 420263401 is about 749.0437596945.

The spelling of 420263401 in words is "four hundred twenty million, two hundred sixty-three thousand, four hundred one".