19431142 has 8 divisors (see below), whose sum is σ = 29934576. Its totient is φ = 9452952.

The previous prime is 19431101. The next prime is 19431143. The reversal of 19431142 is 24113491.

It is a happy number.

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 (19431143) 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, 131218 + ... + 131365.

It is an arithmetic number, because the mean of its divisors is an integer number (3741822).

Almost surely, 2^19431142 is an apocalyptic number.

19431142 is a deficient number, since it is larger than the sum of its proper divisors (10503434).

19431142 is a wasteful number, since it uses less digits than its factorization.

19431142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262622.

The product of its digits is 864, while the sum is 25.

The square root of 19431142 is about 4408.0769049553. The cubic root of 19431142 is about 268.8434387913.

The spelling of 19431142 in words is "nineteen million, four hundred thirty-one thousand, one hundred forty-two".