942431891 has 2 divisors, whose sum is σ = 942431892. Its totient is φ = 942431890.

The previous prime is 942431881. The next prime is 942431911. The reversal of 942431891 is 198134249.

942431891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (198134249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 942431891 - 2¹⁸ = 942169747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (942431851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471215945 + 471215946.

It is an arithmetic number, because the mean of its divisors is an integer number (471215946).

Almost surely, 2^942431891 is an apocalyptic number.

942431891 is a deficient number, since it is larger than the sum of its proper divisors (1).

942431891 is an equidigital number, since it uses as much as digits as its factorization.

942431891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 942431891 is about 30699.0535847606. The cubic root of 942431891 is about 980.4301495683.

The spelling of 942431891 in words is "nine hundred forty-two million, four hundred thirty-one thousand, eight hundred ninety-one".