420594019 has 4 divisors (see below), whose sum is σ = 434161600. Its totient is φ = 407026440.

The previous prime is 420594007. The next prime is 420594043. The reversal of 420594019 is 910495024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420594019 - 2⁷ = 420593891 is a prime.

It is a super-2 number, since 2×420594019² = 353798657637144722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420594079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6783744 + ... + 6783805.

It is an arithmetic number, because the mean of its divisors is an integer number (108540400).

Almost surely, 2^420594019 is an apocalyptic number.

420594019 is a deficient number, since it is larger than the sum of its proper divisors (13567581).

420594019 is a wasteful number, since it uses less digits than its factorization.

420594019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567580.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 420594019 is about 20508.3889908496. The cubic root of 420594019 is about 749.2401305394.

The spelling of 420594019 in words is "four hundred twenty million, five hundred ninety-four thousand, nineteen".