42946839 has 24 divisors (see below), whose sum is σ = 67026960. Its totient is φ = 26341632.

The previous prime is 42946837. The next prime is 42946877. The reversal of 42946839 is 93864924.

42946839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42946839 - 2¹ = 42946837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42946794 and 42946803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42946831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69072 + ... + 69690.

It is an arithmetic number, because the mean of its divisors is an integer number (2792790).

Almost surely, 2^42946839 is an apocalyptic number.

42946839 is a deficient number, since it is larger than the sum of its proper divisors (24080121).

42946839 is a wasteful number, since it uses less digits than its factorization.

42946839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1228 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 42946839 is about 6553.3837824440. The cubic root of 42946839 is about 350.1953711949.

The spelling of 42946839 in words is "forty-two million, nine hundred forty-six thousand, eight hundred thirty-nine".