420219970 has 8 divisors (see below), whose sum is σ = 756395964. Its totient is φ = 168087984.

The previous prime is 420219967. The next prime is 420219971. The reversal of 420219970 is 79912024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 398681089 + 21538881 = 19967^2 + 4641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (420219971) 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, 21010989 + ... + 21011008.

Almost surely, 2^420219970 is an apocalyptic number.

420219970 is a deficient number, since it is larger than the sum of its proper divisors (336175994).

420219970 is a wasteful number, since it uses less digits than its factorization.

420219970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42022004.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 420219970 is about 20499.2675478906. The cubic root of 420219970 is about 749.0179561626.

The spelling of 420219970 in words is "four hundred twenty million, two hundred nineteen thousand, nine hundred seventy".