42203542 has 4 divisors (see below), whose sum is σ = 63305316. Its totient is φ = 21101770.

The previous prime is 42203531. The next prime is 42203543. The reversal of 42203542 is 24530224.

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

It is a super-2 number, since 2×42203542² = 3562277914691528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42203543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550884 + ... + 10550887.

It is an arithmetic number, because the mean of its divisors is an integer number (15826329).

Almost surely, 2^42203542 is an apocalyptic number.

42203542 is a deficient number, since it is larger than the sum of its proper divisors (21101774).

42203542 is a wasteful number, since it uses less digits than its factorization.

42203542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21101773.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42203542 is about 6496.4253247459. The cubic root of 42203542 is about 348.1632815918.

Adding to 42203542 its reverse (24530224), we get a palindrome (66733766).

The spelling of 42203542 in words is "forty-two million, two hundred three thousand, five hundred forty-two".