189742 has 8 divisors (see below), whose sum is σ = 325296. Its totient is φ = 81312.

The previous prime is 189733. The next prime is 189743. The reversal of 189742 is 247981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6763 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (40662).

189742 is a Friedman number, since it can be written as 94871*2, using all its digits and the basic arithmetic operations.

2¹⁸⁹⁷⁴² is an apocalyptic number.

189742 is a deficient number, since it is larger than the sum of its proper divisors (135554).

189742 is a wasteful number, since it uses less digits than its factorization.

189742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13562.

The product of its digits is 4032, while the sum is 31.

The square root of 189742 is about 435.5938475231. The cubic root of 189742 is about 57.4629376789.

The spelling of 189742 in words is "one hundred eighty-nine thousand, seven hundred forty-two".