42856719 has 8 divisors (see below), whose sum is σ = 57648432. Its totient is φ = 28318080.

The previous prime is 42856691. The next prime is 42856727. The reversal of 42856719 is 91765824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42856719 - 2⁷ = 42856591 is a prime.

It is a super-2 number, since 2×42856719² = 3673396726889922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42856769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62872 + ... + 63549.

It is an arithmetic number, because the mean of its divisors is an integer number (7206054).

Almost surely, 2^42856719 is an apocalyptic number.

42856719 is a deficient number, since it is larger than the sum of its proper divisors (14791713).

42856719 is a wasteful number, since it uses less digits than its factorization.

42856719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126537.

The product of its digits is 120960, while the sum is 42.

The square root of 42856719 is about 6546.5043343757. The cubic root of 42856719 is about 349.9502487107.

The spelling of 42856719 in words is "forty-two million, eight hundred fifty-six thousand, seven hundred nineteen".