17919142 has 8 divisors (see below), whose sum is σ = 26953056. Its totient is φ = 8934792.

The previous prime is 17919133. The next prime is 17919149. The reversal of 17919142 is 24191971.

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

It is a junction number, because it is equal to n+sod(n) for n = 17919098 and 17919107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17919149) 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 3 ways as a sum of consecutive naturals, for example, 11473 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (3369132).

Almost surely, 2^17919142 is an apocalyptic number.

17919142 is a deficient number, since it is larger than the sum of its proper divisors (9033914).

17919142 is a wasteful number, since it uses less digits than its factorization.

17919142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24782.

The product of its digits is 4536, while the sum is 34.

The square root of 17919142 is about 4233.1007547659. The cubic root of 17919142 is about 261.6811282977.

It can be divided in two parts, 179 and 19142, that added together give a square (19321 = 139²).

The spelling of 17919142 in words is "seventeen million, nine hundred nineteen thousand, one hundred forty-two".