42807319 has 4 divisors (see below), whose sum is σ = 42915544. Its totient is φ = 42699096.

The previous prime is 42807307. The next prime is 42807341. The reversal of 42807319 is 91370824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42807319 - 2⁵ = 42807287 is a prime.

It is a super-2 number, since 2×42807319² = 3664933119935522, 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 (42807379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53517 + ... + 54310.

It is an arithmetic number, because the mean of its divisors is an integer number (10728886).

Almost surely, 2^42807319 is an apocalyptic number.

42807319 is a deficient number, since it is larger than the sum of its proper divisors (108225).

42807319 is a wasteful number, since it uses less digits than its factorization.

42807319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108224.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 42807319 is about 6542.7302405036. The cubic root of 42807319 is about 349.8157370225.

The spelling of 42807319 in words is "forty-two million, eight hundred seven thousand, three hundred nineteen".