42946791 has 4 divisors (see below), whose sum is σ = 57262392. Its totient is φ = 28631192.

The previous prime is 42946789. The next prime is 42946817. The reversal of 42946791 is 19764924.

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 42946791 - 2¹ = 42946789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42946711) 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, 7157796 + ... + 7157801.

It is an arithmetic number, because the mean of its divisors is an integer number (14315598).

Almost surely, 2^42946791 is an apocalyptic number.

42946791 is a deficient number, since it is larger than the sum of its proper divisors (14315601).

42946791 is a wasteful number, since it uses less digits than its factorization.

42946791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14315600.

The product of its digits is 108864, while the sum is 42.

The square root of 42946791 is about 6553.3801202128. The cubic root of 42946791 is about 350.1952407283.

The spelling of 42946791 in words is "forty-two million, nine hundred forty-six thousand, seven hundred ninety-one".