426420190 has 128 divisors (see below), whose sum is σ = 958169088. Its totient is φ = 133539840.

The previous prime is 426420179. The next prime is 426420193. The reversal of 426420190 is 91024624.

It is a super-2 number, since 2×426420190² = 363668356879272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426420193) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3773574 + ... + 3773686.

It is an arithmetic number, because the mean of its divisors is an integer number (7485696).

Almost surely, 2^426420190 is an apocalyptic number.

426420190 is an abundant number, since it is smaller than the sum of its proper divisors (531748898).

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

426420190 is a wasteful number, since it uses less digits than its factorization.

426420190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 426420190 is about 20649.9440677209. The cubic root of 426420190 is about 752.6838305417.

The spelling of 426420190 in words is "four hundred twenty-six million, four hundred twenty thousand, one hundred ninety".