19143242 has 8 divisors (see below), whose sum is σ = 28735236. Its totient is φ = 9564832.

The previous prime is 19143181. The next prime is 19143247. The reversal of 19143242 is 24234191.

It can be written as a sum of positive squares in 2 ways, for example, as 18913801 + 229441 = 4349^2 + 479^2 .

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

It is not an unprimeable number, because it can be changed into a prime (19143247) 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, 1598 + ... + 6390.

Almost surely, 2^19143242 is an apocalyptic number.

19143242 is a deficient number, since it is larger than the sum of its proper divisors (9591994).

19143242 is a wasteful number, since it uses less digits than its factorization.

19143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792.

The product of its digits is 1728, while the sum is 26.

The square root of 19143242 is about 4375.2990754919. The cubic root of 19143242 is about 267.5090607465.

The spelling of 19143242 in words is "nineteen million, one hundred forty-three thousand, two hundred forty-two".