420906619 has 8 divisors (see below), whose sum is σ = 490853600. Its totient is φ = 360776808.

The previous prime is 420906617. The next prime is 420906637. The reversal of 420906619 is 916609024.

It is not a de Polignac number, because 420906619 - 2¹ = 420906617 is a prime.

It is a super-2 number, since 2×420906619² = 354324763836022322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420906613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613224 + ... + 613909.

It is an arithmetic number, because the mean of its divisors is an integer number (61356700).

Almost surely, 2^420906619 is an apocalyptic number.

420906619 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

420906619 is a deficient number, since it is larger than the sum of its proper divisors (69946981).

420906619 is an equidigital number, since it uses as much as digits as its factorization.

420906619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227154 (or 1227140 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 420906619 is about 20516.0088467518. The cubic root of 420906619 is about 749.4257049518.

The spelling of 420906619 in words is "four hundred twenty million, nine hundred six thousand, six hundred nineteen".