42456719 has 4 divisors (see below), whose sum is σ = 42676896. Its totient is φ = 42236544.

The previous prime is 42456679. The next prime is 42456731. The reversal of 42456719 is 91765424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42456719 is a prime.

It is a super-2 number, since 2×42456719² = 3605145976489922, 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 (42456749) 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, 109799 + ... + 110184.

It is an arithmetic number, because the mean of its divisors is an integer number (10669224).

Almost surely, 2^42456719 is an apocalyptic number.

42456719 is a deficient number, since it is larger than the sum of its proper divisors (220177).

42456719 is a wasteful number, since it uses less digits than its factorization.

42456719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220176.

The product of its digits is 60480, while the sum is 38.

The square root of 42456719 is about 6515.8820584783. The cubic root of 42456719 is about 348.8580989224.

The spelling of 42456719 in words is "forty-two million, four hundred fifty-six thousand, seven hundred nineteen".