42812319 has 16 divisors (see below), whose sum is σ = 62697600. Its totient is φ = 25769760.

The previous prime is 42812311. The next prime is 42812351. The reversal of 42812319 is 91321824.

It is not a de Polignac number, because 42812319 - 2³ = 42812311 is a prime.

It is a super-2 number, since 2×42812319² = 3665789316315522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42812311) 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, 564 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (3918600).

Almost surely, 2^42812319 is an apocalyptic number.

42812319 is a deficient number, since it is larger than the sum of its proper divisors (19885281).

42812319 is a wasteful number, since it uses less digits than its factorization.

42812319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8870.

The product of its digits is 3456, while the sum is 30.

The square root of 42812319 is about 6543.1123328276. The cubic root of 42812319 is about 349.8293562714.

The spelling of 42812319 in words is "forty-two million, eight hundred twelve thousand, three hundred nineteen".