42709719 has 16 divisors (see below), whose sum is σ = 61816832. Its totient is φ = 26072928.

The previous prime is 42709717. The next prime is 42709747. The reversal of 42709719 is 91790724.

It is not a de Polignac number, because 42709719 - 2¹ = 42709717 is a prime.

It is a super-2 number, since 2×42709719² = 3648240194117922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42709717) 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, 642 + ... + 9264.

It is an arithmetic number, because the mean of its divisors is an integer number (3863552).

Almost surely, 2^42709719 is an apocalyptic number.

42709719 is a deficient number, since it is larger than the sum of its proper divisors (19107113).

42709719 is a wasteful number, since it uses less digits than its factorization.

42709719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8766.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 42709719 is about 6535.2673242952. The cubic root of 42709719 is about 349.5496766276.

The spelling of 42709719 in words is "forty-two million, seven hundred nine thousand, seven hundred nineteen".