42503091 has 4 divisors (see below), whose sum is σ = 56670792. Its totient is φ = 28335392.

The previous prime is 42503089. The next prime is 42503093. The reversal of 42503091 is 19030524.

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

It is an interprime number because it is at equal distance from previous prime (42503089) and next prime (42503093).

It is a cyclic number.

It is not a de Polignac number, because 42503091 - 2¹ = 42503089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42503093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7083846 + ... + 7083851.

It is an arithmetic number, because the mean of its divisors is an integer number (14167698).

Almost surely, 2^42503091 is an apocalyptic number.

42503091 is a deficient number, since it is larger than the sum of its proper divisors (14167701).

42503091 is a wasteful number, since it uses less digits than its factorization.

42503091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14167700.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 42503091 is about 6519.4394697704. The cubic root of 42503091 is about 348.9850624280.

The spelling of 42503091 in words is "forty-two million, five hundred three thousand, ninety-one".