420240194 has 16 divisors (see below), whose sum is σ = 694478016. Its totient is φ = 189126000.

The previous prime is 420240193. The next prime is 420240209. The reversal of 420240194 is 491042024.

It is not an unprimeable number, because it can be changed into a prime (420240193) 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, 92342 + ... + 96785.

It is an arithmetic number, because the mean of its divisors is an integer number (43404876).

Almost surely, 2^420240194 is an apocalyptic number.

420240194 is a deficient number, since it is larger than the sum of its proper divisors (274237822).

420240194 is a wasteful number, since it uses less digits than its factorization.

420240194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189241.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 420240194 is about 20499.7608278731. The cubic root of 420240194 is about 749.0299720092.

The spelling of 420240194 in words is "four hundred twenty million, two hundred forty thousand, one hundred ninety-four".