17742142 has 16 divisors (see below), whose sum is σ = 30034800. Its totient is φ = 7786240.

The previous prime is 17742107. The next prime is 17742149. The reversal of 17742142 is 24124771.

It is a self number, because there is not a number n which added to its sum of digits gives 17742142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17742149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13267 + ... + 14542.

It is an arithmetic number, because the mean of its divisors is an integer number (1877175).

Almost surely, 2^17742142 is an apocalyptic number.

17742142 is a deficient number, since it is larger than the sum of its proper divisors (12292658).

17742142 is a wasteful number, since it uses less digits than its factorization.

17742142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27851.

The product of its digits is 3136, while the sum is 28.

The square root of 17742142 is about 4212.1422103248. The cubic root of 17742142 is about 260.8166727363.

It can be divided in two parts, 1774 and 2142, that added together give a triangular number (3916 = T₈₈).

The spelling of 17742142 in words is "seventeen million, seven hundred forty-two thousand, one hundred forty-two".