199995426 has 32 divisors (see below), whose sum is σ = 459763200. Its totient is φ = 64365840.

The previous prime is 199995401. The next prime is 199995431. The reversal of 199995426 is 624599991.

199995426 is a `hidden beast` number, since 1 + 9 + 9 + 99 + 542 + 6 = 666.

199995426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 62290 + ... + 65421.

It is an arithmetic number, because the mean of its divisors is an integer number (14367600).

Almost surely, 2^199995426 is an apocalyptic number.

199995426 is an abundant number, since it is smaller than the sum of its proper divisors (259767774).

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

199995426 is a wasteful number, since it uses less digits than its factorization.

199995426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127751 (or 127745 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 199995426 is about 14141.9739074855. The cubic root of 199995426 is about 584.7990894562.

It can be divided in two parts, 19999 and 5426, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 199995426 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, four hundred twenty-six".