188842742 has 16 divisors (see below), whose sum is σ = 322451712. Its totient is φ = 82105320.

The previous prime is 188842741. The next prime is 188842769. The reversal of 188842742 is 247248881.

It is a junction number, because it is equal to n+sod(n) for n = 188842693 and 188842702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188842741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186098 + ... + 187109.

It is an arithmetic number, because the mean of its divisors is an integer number (20153232).

Almost surely, 2^188842742 is an apocalyptic number.

188842742 is a deficient number, since it is larger than the sum of its proper divisors (133608970).

188842742 is a wasteful number, since it uses less digits than its factorization.

188842742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373243.

The product of its digits is 229376, while the sum is 44.

The square root of 188842742 is about 13742.0064764939. The cubic root of 188842742 is about 573.7201446707.

The spelling of 188842742 in words is "one hundred eighty-eight million, eight hundred forty-two thousand, seven hundred forty-two".