188212442 has 32 divisors (see below), whose sum is σ = 326013120. Its totient is φ = 80593920.

The previous prime is 188212441. The next prime is 188212463. The reversal of 188212442 is 244212881.

It is a junction number, because it is equal to n+sod(n) for n = 188212399 and 188212408.

It is not an unprimeable number, because it can be changed into a prime (188212441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79508 + ... + 81840.

It is an arithmetic number, because the mean of its divisors is an integer number (10187910).

Almost surely, 2^188212442 is an apocalyptic number.

188212442 is a deficient number, since it is larger than the sum of its proper divisors (137800678).

188212442 is a wasteful number, since it uses less digits than its factorization.

188212442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558.

The product of its digits is 8192, while the sum is 32.

The square root of 188212442 is about 13719.0539761312. The cubic root of 188212442 is about 573.0811317148.

The spelling of 188212442 in words is "one hundred eighty-eight million, two hundred twelve thousand, four hundred forty-two".