42947807 has 8 divisors (see below), whose sum is σ = 49560576. Its totient is φ = 36454392.

The previous prime is 42947777. The next prime is 42947813. The reversal of 42947807 is 70874924.

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 42947807 - 2²⁴ = 26170591 is a prime.

It is a super-2 number, since 2×42947807² = 3689028252218498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42947837) 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, 29063 + ... + 30504.

It is an arithmetic number, because the mean of its divisors is an integer number (6195072).

Almost surely, 2^42947807 is an apocalyptic number.

42947807 is a deficient number, since it is larger than the sum of its proper divisors (6612769).

42947807 is a wasteful number, since it uses less digits than its factorization.

42947807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59677.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 42947807 is about 6553.4576370035. The cubic root of 42947807 is about 350.1980022506.

The spelling of 42947807 in words is "forty-two million, nine hundred forty-seven thousand, eight hundred seven".