42017424 has 20 divisors (see below), whose sum is σ = 108545136. Its totient is φ = 14005792.

The previous prime is 42017419. The next prime is 42017447. The reversal of 42017424 is 42471024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 42017394 and 42017403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437634 + ... + 437729.

Almost surely, 2^42017424 is an apocalyptic number.

It is an amenable number.

42017424 is an abundant number, since it is smaller than the sum of its proper divisors (66527712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42017424 is a wasteful number, since it uses less digits than its factorization.

42017424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875374 (or 875368 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 42017424 is about 6482.0848497995. The cubic root of 42017424 is about 347.6507263257.

Adding to 42017424 its reverse (42471024), we get a palindrome (84488448).

The spelling of 42017424 in words is "forty-two million, seventeen thousand, four hundred twenty-four".