19477142 has 4 divisors (see below), whose sum is σ = 29215716. Its totient is φ = 9738570.

The previous prime is 19477099. The next prime is 19477163. The reversal of 19477142 is 24177491.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4869284 + ... + 4869287.

It is an arithmetic number, because the mean of its divisors is an integer number (7303929).

Almost surely, 2^19477142 is an apocalyptic number.

19477142 is a deficient number, since it is larger than the sum of its proper divisors (9738574).

19477142 is an equidigital number, since it uses as much as digits as its factorization.

19477142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9738573.

The product of its digits is 14112, while the sum is 35.

The square root of 19477142 is about 4413.2915154111. The cubic root of 19477142 is about 269.0554189933.

The spelling of 19477142 in words is "nineteen million, four hundred seventy-seven thousand, one hundred forty-two".