42597719 has 4 divisors (see below), whose sum is σ = 42712296. Its totient is φ = 42483144.

The previous prime is 42597713. The next prime is 42597727. The reversal of 42597719 is 91779524.

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-42597719 is a prime.

It is a super-2 number, since 2×42597719² = 3629131328005922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42597719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42597713) 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, 56729 + ... + 57474.

It is an arithmetic number, because the mean of its divisors is an integer number (10678074).

Almost surely, 2^42597719 is an apocalyptic number.

42597719 is a deficient number, since it is larger than the sum of its proper divisors (114577).

42597719 is a wasteful number, since it uses less digits than its factorization.

42597719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114576.

The product of its digits is 158760, while the sum is 44.

The square root of 42597719 is about 6526.6928072340. The cubic root of 42597719 is about 349.2438614955.

The spelling of 42597719 in words is "forty-two million, five hundred ninety-seven thousand, seven hundred nineteen".