42508207 has 4 divisors (see below), whose sum is σ = 48580816. Its totient is φ = 36435600.

The previous prime is 42508183. The next prime is 42508243. The reversal of 42508207 is 70280524.

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

It is a cyclic number.

It is not a de Polignac number, because 42508207 - 2¹⁵ = 42475439 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 (42508507) 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, 3036294 + ... + 3036307.

It is an arithmetic number, because the mean of its divisors is an integer number (12145204).

Almost surely, 2^42508207 is an apocalyptic number.

42508207 is a deficient number, since it is larger than the sum of its proper divisors (6072609).

42508207 is an equidigital number, since it uses as much as digits as its factorization.

42508207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072608.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 42508207 is about 6519.8318229844. The cubic root of 42508207 is about 348.9990640446. Note that the first 3 decimals are identical.

The spelling of 42508207 in words is "forty-two million, five hundred eight thousand, two hundred seven".