42103531 has 8 divisors (see below), whose sum is σ = 42596928. Its totient is φ = 41613000.

The previous prime is 42103513. The next prime is 42103541. The reversal of 42103531 is 13530124.

42103531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42103531 is a prime.

It is a super-2 number, since 2×42103531² = 3545414645335922, 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 = 42103499 and 42103508.

It is not an unprimeable number, because it can be changed into a prime (42103511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42876 + ... + 43846.

It is an arithmetic number, because the mean of its divisors is an integer number (5324616).

Almost surely, 2^42103531 is an apocalyptic number.

42103531 is a deficient number, since it is larger than the sum of its proper divisors (493397).

42103531 is a wasteful number, since it uses less digits than its factorization.

42103531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42103531 is about 6488.7233721280. The cubic root of 42103531 is about 347.8880464073. Note that the first 3 decimals are identical.

Adding to 42103531 its reverse (13530124), we get a palindrome (55633655).

The spelling of 42103531 in words is "forty-two million, one hundred three thousand, five hundred thirty-one".