19443142 has 16 divisors (see below), whose sum is σ = 30627072. Its totient is φ = 9239560.

The previous prime is 19443133. The next prime is 19443161. The reversal of 19443142 is 24134491.

It is a self number, because there is not a number n which added to its sum of digits gives 19443142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6417 + ... + 8947.

It is an arithmetic number, because the mean of its divisors is an integer number (1914192).

Almost surely, 2^19443142 is an apocalyptic number.

19443142 is a deficient number, since it is larger than the sum of its proper divisors (11183930).

19443142 is a wasteful number, since it uses less digits than its factorization.

19443142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its digits is 3456, while the sum is 28.

The square root of 19443142 is about 4409.4378326494. The cubic root of 19443142 is about 268.8987702000.

The spelling of 19443142 in words is "nineteen million, four hundred forty-three thousand, one hundred forty-two".