42203645 has 8 divisors (see below), whose sum is σ = 55248480. Its totient is φ = 30693520.

The previous prime is 42203627. The next prime is 42203653. The reversal of 42203645 is 54630224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42203645 - 2¹⁰ = 42202621 is a prime.

It is a super-2 number, since 2×42203645² = 3562295302572050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383615 + ... + 383724.

It is an arithmetic number, because the mean of its divisors is an integer number (6906060).

Almost surely, 2^42203645 is an apocalyptic number.

It is an amenable number.

42203645 is a deficient number, since it is larger than the sum of its proper divisors (13044835).

42203645 is a wasteful number, since it uses less digits than its factorization.

42203645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767355.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 42203645 is about 6496.4332521777. The cubic root of 42203645 is about 348.1635648286.

Adding to 42203645 its reverse (54630224), we get a palindrome (96833869).

The spelling of 42203645 in words is "forty-two million, two hundred three thousand, six hundred forty-five".