191421014 has 8 divisors (see below), whose sum is σ = 287258880. Its totient is φ = 95668056.

The previous prime is 191421011. The next prime is 191421031. The reversal of 191421014 is 410124191.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191421011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15254 + ... + 24809.

It is an arithmetic number, because the mean of its divisors is an integer number (35907360).

Almost surely, 2^191421014 is an apocalyptic number.

191421014 is a deficient number, since it is larger than the sum of its proper divisors (95837866).

191421014 is a wasteful number, since it uses less digits than its factorization.

191421014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42454.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 191421014 is about 13835.4983285749. The cubic root of 191421014 is about 576.3193537549.

The spelling of 191421014 in words is "one hundred ninety-one million, four hundred twenty-one thousand, fourteen".