42203631 has 4 divisors (see below), whose sum is σ = 56271512. Its totient is φ = 28135752.

The previous prime is 42203627. The next prime is 42203653. The reversal of 42203631 is 13630224.

It is a happy number.

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

It is not a de Polignac number, because 42203631 - 2² = 42203627 is a prime.

It is a super-2 number, since 2×42203631² = 3562292939168322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42203598 and 42203607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42203131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7033936 + ... + 7033941.

It is an arithmetic number, because the mean of its divisors is an integer number (14067878).

Almost surely, 2^42203631 is an apocalyptic number.

42203631 is a deficient number, since it is larger than the sum of its proper divisors (14067881).

42203631 is a wasteful number, since it uses less digits than its factorization.

42203631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14067880.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 42203631 is about 6496.4321746633. The cubic root of 42203631 is about 348.1635263305.

Adding to 42203631 its reverse (13630224), we get a palindrome (55833855).

The spelling of 42203631 in words is "forty-two million, two hundred three thousand, six hundred thirty-one".