199421265 has 8 divisors (see below), whose sum is σ = 319074048. Its totient is φ = 106358000.

The previous prime is 199421263. The next prime is 199421273. The reversal of 199421265 is 562124991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199421265 - 2¹ = 199421263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199421263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6647361 + ... + 6647390.

It is an arithmetic number, because the mean of its divisors is an integer number (39884256).

Almost surely, 2^199421265 is an apocalyptic number.

199421265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199421265 is a deficient number, since it is larger than the sum of its proper divisors (119652783).

199421265 is a wasteful number, since it uses less digits than its factorization.

199421265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13294759.

The product of its digits is 38880, while the sum is 39.

The square root of 199421265 is about 14121.6594279851. The cubic root of 199421265 is about 584.2389255457.

The spelling of 199421265 in words is "one hundred ninety-nine million, four hundred twenty-one thousand, two hundred sixty-five".