188442542 has 16 divisors (see below), whose sum is σ = 299793312. Its totient is φ = 88645920.

The previous prime is 188442523. The next prime is 188442557. The reversal of 188442542 is 245244881.

It is a junction number, because it is equal to n+sod(n) for n = 188442496 and 188442505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30773 + ... + 36384.

It is an arithmetic number, because the mean of its divisors is an integer number (18737082).

Almost surely, 2^188442542 is an apocalyptic number.

188442542 is a deficient number, since it is larger than the sum of its proper divisors (111350770).

188442542 is a wasteful number, since it uses less digits than its factorization.

188442542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67243.

The product of its digits is 81920, while the sum is 38.

The square root of 188442542 is about 13727.4375613222. The cubic root of 188442542 is about 573.3145776119.

The spelling of 188442542 in words is "one hundred eighty-eight million, four hundred forty-two thousand, five hundred forty-two".