86742042 has 8 divisors (see below), whose sum is σ = 173484096. Its totient is φ = 28914012.

The previous prime is 86742037. The next prime is 86742053. The reversal of 86742042 is 24024768.

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

86742042 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 86741994 and 86742012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7228498 + ... + 7228509.

It is an arithmetic number, because the mean of its divisors is an integer number (21685512).

Almost surely, 2^86742042 is an apocalyptic number.

86742042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86742042 is a wasteful number, since it uses less digits than its factorization.

86742042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14457012.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 86742042 is about 9313.5407874771. The cubic root of 86742042 is about 442.6663883192. Note that the first 3 decimals are identical.

The spelling of 86742042 in words is "eighty-six million, seven hundred forty-two thousand, forty-two".