40188742 has 8 divisors (see below), whose sum is σ = 65763432. Its totient is φ = 18267600.

The previous prime is 40188739. The next prime is 40188773. The reversal of 40188742 is 24788104.

40188742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 40188698 and 40188707.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 913359 + ... + 913402.

It is an arithmetic number, because the mean of its divisors is an integer number (8220429).

Almost surely, 2^40188742 is an apocalyptic number.

40188742 is a deficient number, since it is larger than the sum of its proper divisors (25574690).

40188742 is a wasteful number, since it uses less digits than its factorization.

40188742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826774.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 40188742 is about 6339.4591251936. The cubic root of 40188742 is about 342.5322526325.

The spelling of 40188742 in words is "forty million, one hundred eighty-eight thousand, seven hundred forty-two".