420037819 has 4 divisors (see below), whose sum is σ = 444745944. Its totient is φ = 395329696.

The previous prime is 420037781. The next prime is 420037823. The reversal of 420037819 is 918730024.

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

It is not a de Polignac number, because 420037819 - 2⁷ = 420037691 is a prime.

It is a super-2 number, since 2×420037819² = 352863538780553522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420037859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12354037 + ... + 12354070.

It is an arithmetic number, because the mean of its divisors is an integer number (111186486).

Almost surely, 2^420037819 is an apocalyptic number.

420037819 is a deficient number, since it is larger than the sum of its proper divisors (24708125).

420037819 is a wasteful number, since it uses less digits than its factorization.

420037819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24708124.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 420037819 is about 20494.8242002707. The cubic root of 420037819 is about 748.9097159571.

The spelling of 420037819 in words is "four hundred twenty million, thirty-seven thousand, eight hundred nineteen".