9942872 has 8 divisors (see below), whose sum is σ = 18642900. Its totient is φ = 4971432.

The previous prime is 9942797. The next prime is 9942883. The reversal of 9942872 is 2782499.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621422 + ... + 621437.

Almost surely, 2^9942872 is an apocalyptic number.

It is an amenable number.

9942872 is a deficient number, since it is larger than the sum of its proper divisors (8700028).

9942872 is a wasteful number, since it uses less digits than its factorization.

9942872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242865 (or 1242861 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 9942872 is about 3153.2319927338. The cubic root of 9942872 is about 215.0324234497.

It can be divided in two parts, 9 and 942872, that multiplied together give a palindrome (8485848).

The spelling of 9942872 in words is "nine million, nine hundred forty-two thousand, eight hundred seventy-two".