420997269 has 96 divisors (see below), whose sum is σ = 764328960. Its totient is φ = 203212800.

The previous prime is 420997261. The next prime is 420997277. The reversal of 420997269 is 962799024.

It is an interprime number because it is at equal distance from previous prime (420997261) and next prime (420997277).

It is not a de Polignac number, because 420997269 - 2³ = 420997261 is a prime.

It is a super-2 number, since 2×420997269² = 354477401010916722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420997261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2181237 + ... + 2181429.

It is an arithmetic number, because the mean of its divisors is an integer number (7961760).

Almost surely, 2^420997269 is an apocalyptic number.

420997269 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

420997269 is a deficient number, since it is larger than the sum of its proper divisors (343331691).

420997269 is a wasteful number, since it uses less digits than its factorization.

420997269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 420997269 is about 20518.2179781773. The cubic root of 420997269 is about 749.4795019704.

The spelling of 420997269 in words is "four hundred twenty million, nine hundred ninety-seven thousand, two hundred sixty-nine".