42503807 has 2 divisors, whose sum is σ = 42503808. Its totient is φ = 42503806.

The previous prime is 42503789. The next prime is 42503809. The reversal of 42503807 is 70830524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42503807 - 2¹⁰ = 42502783 is a prime.

Together with 42503809, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42503807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42503809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21251903 + 21251904.

It is an arithmetic number, because the mean of its divisors is an integer number (21251904).

Almost surely, 2^42503807 is an apocalyptic number.

42503807 is a deficient number, since it is larger than the sum of its proper divisors (1).

42503807 is an equidigital number, since it uses as much as digits as its factorization.

42503807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42503807 is about 6519.4943822355. The cubic root of 42503807 is about 348.9870220651.

The spelling of 42503807 in words is "forty-two million, five hundred three thousand, eight hundred seven".