42823319 has 16 divisors (see below), whose sum is σ = 54836736. Its totient is φ = 32464800.

The previous prime is 42823301. The next prime is 42823331. The reversal of 42823319 is 91332824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42823319 - 2¹² = 42819223 is a prime.

It is a super-2 number, since 2×42823319² = 3667673300351522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42823349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4667 + ... + 10364.

It is an arithmetic number, because the mean of its divisors is an integer number (3427296).

Almost surely, 2^42823319 is an apocalyptic number.

42823319 is a deficient number, since it is larger than the sum of its proper divisors (12013417).

42823319 is a wasteful number, since it uses less digits than its factorization.

42823319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15086.

The product of its digits is 10368, while the sum is 32.

The square root of 42823319 is about 6543.9528574097. The cubic root of 42823319 is about 349.8593148867.

The spelling of 42823319 in words is "forty-two million, eight hundred twenty-three thousand, three hundred nineteen".