420192646 has 36 divisors (see below), whose sum is σ = 671189652. Its totient is φ = 197258544.

The previous prime is 420192637. The next prime is 420192649. The reversal of 420192646 is 646291024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420192649) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5062521 + ... + 5062603.

It is an arithmetic number, because the mean of its divisors is an integer number (18644157).

Almost surely, 2^420192646 is an apocalyptic number.

420192646 is a deficient number, since it is larger than the sum of its proper divisors (250997006).

420192646 is an equidigital number, since it uses as much as digits as its factorization.

420192646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 420192646 is about 20498.6010742197. The cubic root of 420192646 is about 749.0017213239.

The spelling of 420192646 in words is "four hundred twenty million, one hundred ninety-two thousand, six hundred forty-six".