42447319 has 4 divisors (see below), whose sum is σ = 42707896. Its totient is φ = 42186744.

The previous prime is 42447281. The next prime is 42447323. The reversal of 42447319 is 91374424.

It is a happy number.

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 42447319 - 2¹³ = 42439127 is a prime.

It is a super-2 number, since 2×42447319² = 3603549780575522, 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 (42441319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130044 + ... + 130369.

It is an arithmetic number, because the mean of its divisors is an integer number (10676974).

Almost surely, 2^42447319 is an apocalyptic number.

42447319 is a deficient number, since it is larger than the sum of its proper divisors (260577).

42447319 is a wasteful number, since it uses less digits than its factorization.

42447319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260576.

The product of its digits is 24192, while the sum is 34.

The square root of 42447319 is about 6515.1607040809. The cubic root of 42447319 is about 348.8323510687.

The spelling of 42447319 in words is "forty-two million, four hundred forty-seven thousand, three hundred nineteen".