42949339 has 2 divisors, whose sum is σ = 42949340. Its totient is φ = 42949338.

The previous prime is 42949337. The next prime is 42949393. The reversal of 42949339 is 93394924.

Together with next prime (42949393) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42949339 - 2¹ = 42949337 is a prime.

Together with 42949337, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42949295 and 42949304.

It is not a weakly prime, because it can be changed into another prime (42949337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474669 + 21474670.

It is an arithmetic number, because the mean of its divisors is an integer number (21474670).

Almost surely, 2^42949339 is an apocalyptic number.

42949339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42949339 is an equidigital number, since it uses as much as digits as its factorization.

42949339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 42949339 is about 6553.5745208245. The cubic root of 42949339 is about 350.2021661959.

The spelling of 42949339 in words is "forty-two million, nine hundred forty-nine thousand, three hundred thirty-nine".