101942842 has 4 divisors (see below), whose sum is σ = 152914266. Its totient is φ = 50971420.

The previous prime is 101942839. The next prime is 101942843. The reversal of 101942842 is 248249101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89699841 + 12243001 = 9471^2 + 3499^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (101942843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25485709 + ... + 25485712.

Almost surely, 2^101942842 is an apocalyptic number.

101942842 is a deficient number, since it is larger than the sum of its proper divisors (50971424).

101942842 is an equidigital number, since it uses as much as digits as its factorization.

101942842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50971423.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 101942842 is about 10096.6747991604. The cubic root of 101942842 is about 467.1455817030.

The spelling of 101942842 in words is "one hundred one million, nine hundred forty-two thousand, eight hundred forty-two".