42503743 has 4 divisors (see below), whose sum is σ = 42534720. Its totient is φ = 42472768.

The previous prime is 42503633. The next prime is 42503749. The reversal of 42503743 is 34730524.

42503743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42503743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42503749) 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 3 ways as a sum of consecutive naturals, for example, 13330 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (10633680).

Almost surely, 2^42503743 is an apocalyptic number.

42503743 is a deficient number, since it is larger than the sum of its proper divisors (30977).

42503743 is a wasteful number, since it uses less digits than its factorization.

42503743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30976.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 42503743 is about 6519.4894738775. The cubic root of 42503743 is about 348.9868469029.

The spelling of 42503743 in words is "forty-two million, five hundred three thousand, seven hundred forty-three".