42280043 has 4 divisors (see below), whose sum is σ = 45532368. Its totient is φ = 39027720.

The previous prime is 42280039. The next prime is 42280079. The reversal of 42280043 is 34008224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42280043 - 2² = 42280039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42280013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626143 + ... + 1626168.

It is an arithmetic number, because the mean of its divisors is an integer number (11383092).

Almost surely, 2^42280043 is an apocalyptic number.

42280043 is a deficient number, since it is larger than the sum of its proper divisors (3252325).

42280043 is a wasteful number, since it uses less digits than its factorization.

42280043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252324.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 42280043 is about 6502.3105893213. The cubic root of 42280043 is about 348.3735227293.

Adding to 42280043 its reverse (34008224), we get a palindrome (76288267).

The spelling of 42280043 in words is "forty-two million, two hundred eighty thousand, forty-three".