42423017 has 16 divisors (see below), whose sum is σ = 54485760. Its totient is φ = 32104512.

The previous prime is 42423011. The next prime is 42423049. The reversal of 42423017 is 71032424.

42423017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42423017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 42422983 and 42423001.

It is not an unprimeable number, because it can be changed into a prime (42423011) 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 15 ways as a sum of consecutive naturals, for example, 8042 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (3405360).

Almost surely, 2^42423017 is an apocalyptic number.

It is an amenable number.

42423017 is a deficient number, since it is larger than the sum of its proper divisors (12062743).

42423017 is a wasteful number, since it uses less digits than its factorization.

42423017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42423017 is about 6513.2954024825. The cubic root of 42423017 is about 348.7657670274.

The spelling of 42423017 in words is "forty-two million, four hundred twenty-three thousand, seventeen".