19142347 has 8 divisors (see below), whose sum is σ = 21908736. Its totient is φ = 16383912.

The previous prime is 19142341. The next prime is 19142377. The reversal of 19142347 is 74324191.

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

It is a cyclic number.

It is not a de Polignac number, because 19142347 - 2⁷ = 19142219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19142341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4668 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (2738592).

Almost surely, 2^19142347 is an apocalyptic number.

19142347 is a deficient number, since it is larger than the sum of its proper divisors (2766389).

19142347 is an equidigital number, since it uses as much as digits as its factorization.

19142347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977.

The product of its digits is 6048, while the sum is 31.

The square root of 19142347 is about 4375.1967955739. The cubic root of 19142347 is about 267.5048917497.

The spelling of 19142347 in words is "nineteen million, one hundred forty-two thousand, three hundred forty-seven".