19776142 has 8 divisors (see below), whose sum is σ = 29683800. Its totient is φ = 9881544.

The previous prime is 19776121. The next prime is 19776157. The reversal of 19776142 is 24167791.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2709 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (3710475).

Almost surely, 2^19776142 is an apocalyptic number.

19776142 is a deficient number, since it is larger than the sum of its proper divisors (9907658).

19776142 is a wasteful number, since it uses less digits than its factorization.

19776142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6530.

The product of its digits is 21168, while the sum is 37.

The square root of 19776142 is about 4447.0374408138. The cubic root of 19776142 is about 270.4252193225.

It can be divided in two parts, 19 and 776142, that added together give a square (776161 = 881²).

The spelling of 19776142 in words is "nineteen million, seven hundred seventy-six thousand, one hundred forty-two".