42807019 has 12 divisors (see below), whose sum is σ = 45764040. Its totient is φ = 40040676.

The previous prime is 42806983. The next prime is 42807029. The reversal of 42807019 is 91070824.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 42807019 - 2¹³ = 42798827 is a prime.

It is a super-2 number, since 2×42807019² = 3664881751332722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42807029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541822 + ... + 541900.

It is an arithmetic number, because the mean of its divisors is an integer number (3813670).

Almost surely, 2^42807019 is an apocalyptic number.

42807019 is a deficient number, since it is larger than the sum of its proper divisors (2957021).

42807019 is an frugal number, since it uses more digits than its factorization.

42807019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 42807019 is about 6542.7073142546. The cubic root of 42807019 is about 349.8149198338.

The spelling of 42807019 in words is "forty-two million, eight hundred seven thousand, nineteen".