9940824142 has 4 divisors (see below), whose sum is σ = 14911236216. Its totient is φ = 4970412070.

The previous prime is 9940824133. The next prime is 9940824163. The reversal of 9940824142 is 2414280499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2414280499 = 20261 ⋅119159.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485206034 + ... + 2485206037.

It is an arithmetic number, because the mean of its divisors is an integer number (3727809054).

Almost surely, 2^9940824142 is an apocalyptic number.

9940824142 is a deficient number, since it is larger than the sum of its proper divisors (4970412074).

9940824142 is a wasteful number, since it uses less digits than its factorization.

9940824142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970412073.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 9940824142 is about 99703.6816872878. The cubic root of 9940824142 is about 2150.1765956982.

The spelling of 9940824142 in words is "nine billion, nine hundred forty million, eight hundred twenty-four thousand, one hundred forty-two".