42707819 has 16 divisors (see below), whose sum is σ = 54383616. Its totient is φ = 32568000.

The previous prime is 42707779. The next prime is 42707831. The reversal of 42707819 is 91870724.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42707819 is a prime.

It is a super-2 number, since 2×42707819² = 3647915607473522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42707219) 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, 2282 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (3398976).

Almost surely, 2^42707819 is an apocalyptic number.

42707819 is a deficient number, since it is larger than the sum of its proper divisors (11675797).

42707819 is a wasteful number, since it uses less digits than its factorization.

42707819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11866.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 42707819 is about 6535.1219575460. The cubic root of 42707819 is about 349.5444931529.

The spelling of 42707819 in words is "forty-two million, seven hundred seven thousand, eight hundred nineteen".