82042739 has 2 divisors, whose sum is σ = 82042740. Its totient is φ = 82042738.

The previous prime is 82042721. The next prime is 82042757. The reversal of 82042739 is 93724028.

It is a balanced prime because it is at equal distance from previous prime (82042721) and next prime (82042757).

It is a cyclic number.

It is not a de Polignac number, because 82042739 - 2¹² = 82038643 is a prime.

It is a super-2 number, since 2×82042739² = 13462022045244242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82042699 and 82042708.

It is not a weakly prime, because it can be changed into another prime (82042759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41021369 + 41021370.

It is an arithmetic number, because the mean of its divisors is an integer number (41021370).

Almost surely, 2^82042739 is an apocalyptic number.

82042739 is a deficient number, since it is larger than the sum of its proper divisors (1).

82042739 is an equidigital number, since it uses as much as digits as its factorization.

82042739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 82042739 is about 9057.7446972191. The cubic root of 82042739 is about 434.5236146519.

The spelling of 82042739 in words is "eighty-two million, forty-two thousand, seven hundred thirty-nine".