420537479 has 2 divisors, whose sum is σ = 420537480. Its totient is φ = 420537478.

The previous prime is 420537433. The next prime is 420537487. The reversal of 420537479 is 974735024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420537479 - 2¹⁶ = 420471943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420537419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210268739 + 210268740.

It is an arithmetic number, because the mean of its divisors is an integer number (210268740).

Almost surely, 2^420537479 is an apocalyptic number.

420537479 is a deficient number, since it is larger than the sum of its proper divisors (1).

420537479 is an equidigital number, since it uses as much as digits as its factorization.

420537479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 420537479 is about 20507.0104842222. The cubic root of 420537479 is about 749.2065558542.

The spelling of 420537479 in words is "four hundred twenty million, five hundred thirty-seven thousand, four hundred seventy-nine".