42431807 has 8 divisors (see below), whose sum is σ = 48725760. Its totient is φ = 36543960.

The previous prime is 42431789. The next prime is 42431819. The reversal of 42431807 is 70813424.

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

It is a cyclic number.

It is not a de Polignac number, because 42431807 - 2¹² = 42427711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42431807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42431867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101303 + ... + 101720.

It is an arithmetic number, because the mean of its divisors is an integer number (6090720).

Almost surely, 2^42431807 is an apocalyptic number.

42431807 is a deficient number, since it is larger than the sum of its proper divisors (6293953).

42431807 is a wasteful number, since it uses less digits than its factorization.

42431807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203053.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 42431807 is about 6513.9701411658. The cubic root of 42431807 is about 348.7898533183.

The spelling of 42431807 in words is "forty-two million, four hundred thirty-one thousand, eight hundred seven".