189142443 has 24 divisors (see below), whose sum is σ = 314496000. Its totient is φ = 107298864.

The previous prime is 189142417. The next prime is 189142463. The reversal of 189142443 is 344241981.

It is a happy number.

189142443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189142443 - 2⁵ = 189142411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189142398 and 189142407.

It is not an unprimeable number, because it can be changed into a prime (189142403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2043 + ... + 19556.

It is an arithmetic number, because the mean of its divisors is an integer number (13104000).

Almost surely, 2^189142443 is an apocalyptic number.

189142443 is a deficient number, since it is larger than the sum of its proper divisors (125353557).

189142443 is a wasteful number, since it uses less digits than its factorization.

189142443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21751 (or 21748 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 189142443 is about 13752.9067109466. The cubic root of 189142443 is about 574.0234898747.

The spelling of 189142443 in words is "one hundred eighty-nine million, one hundred forty-two thousand, four hundred forty-three".