9942142 has 16 divisors (see below), whose sum is σ = 17160192. Its totient is φ = 4231800.

The previous prime is 9942133. The next prime is 9942143. The reversal of 9942142 is 2412499.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238 + ... + 4465.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^9942142 is an apocalyptic number.

9942142 is a deficient number, since it is larger than the sum of its proper divisors (7218050).

9942142 is a wasteful number, since it uses less digits than its factorization.

9942142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863.

The product of its digits is 5184, while the sum is 31.

The square root of 9942142 is about 3153.1162363605. The cubic root of 9942142 is about 215.0271608016.

It can be divided in two parts, 994 and 2142, that added together give a square (3136 = 56²).

The spelling of 9942142 in words is "nine million, nine hundred forty-two thousand, one hundred forty-two".