9942187941 has 20 divisors (see below), whose sum is σ = 16973612832. Its totient is φ = 5681249928.

The previous prime is 9942187891. The next prime is 9942187963. The reversal of 9942187941 is 1497812499.

It is not a de Polignac number, because 9942187941 - 2⁷ = 9942187813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942182941) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8766795 + ... + 8767928.

Almost surely, 2^9942187941 is an apocalyptic number.

It is an amenable number.

9942187941 is a deficient number, since it is larger than the sum of its proper divisors (7031424891).

9942187941 is a wasteful number, since it uses less digits than its factorization.

9942187941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17534742 (or 17534733 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9942187941 is about 99710.5207137141. The cubic root of 9942187941 is about 2150.2749200275.

The spelling of 9942187941 in words is "nine billion, nine hundred forty-two million, one hundred eighty-seven thousand, nine hundred forty-one".