420020194 has 32 divisors (see below), whose sum is σ = 724930560. Its totient is φ = 180507600.

The previous prime is 420020171. The next prime is 420020201. The reversal of 420020194 is 491020024.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380247 + ... + 381349.

It is an arithmetic number, because the mean of its divisors is an integer number (22654080).

Almost surely, 2^420020194 is an apocalyptic number.

420020194 is a deficient number, since it is larger than the sum of its proper divisors (304910366).

420020194 is a wasteful number, since it uses less digits than its factorization.

420020194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 420020194 is about 20494.3942091490. The cubic root of 420020194 is about 748.8992409334.

The spelling of 420020194 in words is "four hundred twenty million, twenty thousand, one hundred ninety-four".