420919719 has 16 divisors (see below), whose sum is σ = 612938880. Its totient is φ = 254814560.

The previous prime is 420919699. The next prime is 420919789. The reversal of 420919719 is 917919024.

It is not a de Polignac number, because 420919719 - 2⁷ = 420919591 is a prime.

It is a super-2 number, since 2×420919719² = 354346819686077922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420919789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24517 + ... + 37985.

It is an arithmetic number, because the mean of its divisors is an integer number (38308680).

Almost surely, 2^420919719 is an apocalyptic number.

420919719 is a deficient number, since it is larger than the sum of its proper divisors (192019161).

420919719 is a wasteful number, since it uses less digits than its factorization.

420919719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 420919719 is about 20516.3281071443. The cubic root of 420919719 is about 749.4334797364.

The spelling of 420919719 in words is "four hundred twenty million, nine hundred nineteen thousand, seven hundred nineteen".