42831099 has 10 divisors (see below), whose sum is σ = 63982380. Its totient is φ = 28554012.

The previous prime is 42831097. The next prime is 42831127. The reversal of 42831099 is 99013824.

It is not a de Polignac number, because 42831099 - 2¹ = 42831097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42831091) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 264309 + ... + 264470.

It is an arithmetic number, because the mean of its divisors is an integer number (6398238).

Almost surely, 2^42831099 is an apocalyptic number.

42831099 is a deficient number, since it is larger than the sum of its proper divisors (21151281).

42831099 is an equidigital number, since it uses as much as digits as its factorization.

42831099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528791 (or 528782 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 42831099 is about 6544.5472723482. The cubic root of 42831099 is about 349.8805007010.

The spelling of 42831099 in words is "forty-two million, eight hundred thirty-one thousand, ninety-nine".