420015263 has 2 divisors, whose sum is σ = 420015264. Its totient is φ = 420015262.

The previous prime is 420015251. The next prime is 420015269. The reversal of 420015263 is 362510024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420015263 - 2⁶ = 420015199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420015269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210007631 + 210007632.

It is an arithmetic number, because the mean of its divisors is an integer number (210007632).

Almost surely, 2^420015263 is an apocalyptic number.

420015263 is a deficient number, since it is larger than the sum of its proper divisors (1).

420015263 is an equidigital number, since it uses as much as digits as its factorization.

420015263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 420015263 is about 20494.2739076065. The cubic root of 420015263 is about 748.8963102516.

Adding to 420015263 its reverse (362510024), we get a palindrome (782525287).

The spelling of 420015263 in words is "four hundred twenty million, fifteen thousand, two hundred sixty-three".