420540446 has 8 divisors (see below), whose sum is σ = 647859720. Its totient is φ = 204587208.

The previous prime is 420540401. The next prime is 420540481. The reversal of 420540446 is 644045024.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2841416 + ... + 2841563.

It is an arithmetic number, because the mean of its divisors is an integer number (80982465).

Almost surely, 2^420540446 is an apocalyptic number.

420540446 is a deficient number, since it is larger than the sum of its proper divisors (227319274).

420540446 is a wasteful number, since it uses less digits than its factorization.

420540446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683018.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 420540446 is about 20507.0828252094. The cubic root of 420540446 is about 749.2083177983.

The spelling of 420540446 in words is "four hundred twenty million, five hundred forty thousand, four hundred forty-six".