420988523 has 2 divisors, whose sum is σ = 420988524. Its totient is φ = 420988522.

The previous prime is 420988507. The next prime is 420988559. The reversal of 420988523 is 325889024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420988523 - 2⁴ = 420988507 is a prime.

It is not a weakly prime, because it can be changed into another prime (420984523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210494261 + 210494262.

It is an arithmetic number, because the mean of its divisors is an integer number (210494262).

Almost surely, 2^420988523 is an apocalyptic number.

420988523 is a deficient number, since it is larger than the sum of its proper divisors (1).

420988523 is an equidigital number, since it uses as much as digits as its factorization.

420988523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 420988523 is about 20518.0048494000. The cubic root of 420988523 is about 749.4743119184.

The spelling of 420988523 in words is "four hundred twenty million, nine hundred eighty-eight thousand, five hundred twenty-three".