42281819 has 8 divisors (see below), whose sum is σ = 43591920. Its totient is φ = 40991616.

The previous prime is 42281807. The next prime is 42281831. The reversal of 42281819 is 91818224.

42281819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42281807) and next prime (42281831).

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

It is a cyclic number.

It is not a de Polignac number, because 42281819 - 2⁴ = 42281803 is a prime.

It is a super-2 number, since 2×42281819² = 3575504435897522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42281119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (5448990).

Almost surely, 2^42281819 is an apocalyptic number.

42281819 is a deficient number, since it is larger than the sum of its proper divisors (1310101).

42281819 is an equidigital number, since it uses as much as digits as its factorization.

42281819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949.

The product of its digits is 9216, while the sum is 35.

The square root of 42281819 is about 6502.4471547257. The cubic root of 42281819 is about 348.3784005445.

The spelling of 42281819 in words is "forty-two million, two hundred eighty-one thousand, eight hundred nineteen".