420191094 has 16 divisors (see below), whose sum is σ = 876920832. Its totient is φ = 133973928.

The previous prime is 420191089. The next prime is 420191111. The reversal of 420191094 is 490191024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522294 + ... + 1522569.

It is an arithmetic number, because the mean of its divisors is an integer number (54807552).

Almost surely, 2^420191094 is an apocalyptic number.

420191094 is an abundant number, since it is smaller than the sum of its proper divisors (456729738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420191094 is a wasteful number, since it uses less digits than its factorization.

420191094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044891.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 420191094 is about 20498.5632179429. The cubic root of 420191094 is about 749.0007991659. Note that the first 3 decimals are identical.

The spelling of 420191094 in words is "four hundred twenty million, one hundred ninety-one thousand, ninety-four".