199101420 has 72 divisors (see below), whose sum is σ = 690222624. Its totient is φ = 45508608.

The previous prime is 199101407. The next prime is 199101431. The reversal of 199101420 is 24101991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77749 + ... + 80268.

Almost surely, 2^199101420 is an apocalyptic number.

199101420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199101420 is an abundant number, since it is smaller than the sum of its proper divisors (491121204).

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

199101420 is a wasteful number, since it uses less digits than its factorization.

199101420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158039 (or 158034 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 199101420 is about 14110.3302583604. The cubic root of 199101420 is about 583.9264114132.

The spelling of 199101420 in words is "one hundred ninety-nine million, one hundred one thousand, four hundred twenty".