420190569 has 24 divisors (see below), whose sum is σ = 614045952. Its totient is φ = 276868800.

The previous prime is 420190553. The next prime is 420190583. The reversal of 420190569 is 965091024.

420190569 is a `hidden beast` number, since 4 + 2 + 0 + 1 + 90 + 569 = 666.

It is not a de Polignac number, because 420190569 - 2⁴ = 420190553 is a prime.

It is a super-2 number, since 2×420190569² = 353120228553087522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420150569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315984 + ... + 317310.

It is an arithmetic number, because the mean of its divisors is an integer number (25585248).

Almost surely, 2^420190569 is an apocalyptic number.

It is an amenable number.

420190569 is a deficient number, since it is larger than the sum of its proper divisors (193855383).

420190569 is a wasteful number, since it uses less digits than its factorization.

420190569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 420190569 is about 20498.5504121633. The cubic root of 420190569 is about 749.0004872240. Note that the first 3 decimals are identical.

The spelling of 420190569 in words is "four hundred twenty million, one hundred ninety thousand, five hundred sixty-nine".