42003422 has 4 divisors (see below), whose sum is σ = 63005136. Its totient is φ = 21001710.

The previous prime is 42003421. The next prime is 42003463. The reversal of 42003422 is 22430024.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42003422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500854 + ... + 10500857.

It is an arithmetic number, because the mean of its divisors is an integer number (15751284).

Almost surely, 2^42003422 is an apocalyptic number.

42003422 is a deficient number, since it is larger than the sum of its proper divisors (21001714).

42003422 is a wasteful number, since it uses less digits than its factorization.

42003422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21001713.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42003422 is about 6481.0047060622. The cubic root of 42003422 is about 347.6121046792.

Adding to 42003422 its reverse (22430024), we get a palindrome (64433446).

The spelling of 42003422 in words is "forty-two million, three thousand, four hundred twenty-two".