19242142 has 16 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 9394840.

The previous prime is 19242137. The next prime is 19242149. The reversal of 19242142 is 24124291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19242149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20667 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (1846800).

Almost surely, 2^19242142 is an apocalyptic number.

19242142 is a deficient number, since it is larger than the sum of its proper divisors (10306658).

19242142 is a wasteful number, since it uses less digits than its factorization.

19242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

The product of its digits is 1152, while the sum is 25.

The square root of 19242142 is about 4386.5866000798. The cubic root of 19242142 is about 267.9689482847.

The spelling of 19242142 in words is "nineteen million, two hundred forty-two thousand, one hundred forty-two".