42331099 has 2 divisors, whose sum is σ = 42331100. Its totient is φ = 42331098.

The previous prime is 42331087. The next prime is 42331103. The reversal of 42331099 is 99013324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42331099 - 2¹⁵ = 42298331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42331099.

It is not a weakly prime, because it can be changed into another prime (42371099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165549 + 21165550.

It is an arithmetic number, because the mean of its divisors is an integer number (21165550).

Almost surely, 2^42331099 is an apocalyptic number.

42331099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42331099 is an equidigital number, since it uses as much as digits as its factorization.

42331099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 42331099 is about 6506.2353938357. The cubic root of 42331099 is about 348.5136944874.

The spelling of 42331099 in words is "forty-two million, three hundred thirty-one thousand, ninety-nine".