702139 has 2 divisors, whose sum is σ = 702140. Its totient is φ = 702138.

The previous prime is 702137. The next prime is 702173. The reversal of 702139 is 931207.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 702139 - 2¹ = 702137 is a prime.

Together with 702137, it forms a pair of twin primes.

It is an Ulam number.

702139 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (702131) 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 as a sum of consecutive naturals, namely, 351069 + 351070.

It is an arithmetic number, because the mean of its divisors is an integer number (351070).

2⁷⁰²¹³⁹ is an apocalyptic number.

702139 is a deficient number, since it is larger than the sum of its proper divisors (1).

702139 is an equidigital number, since it uses as much as digits as its factorization.

702139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 702139 is about 837.9373484933. The cubic root of 702139 is about 88.8807475761.

It can be divided in two parts, 702 and 139, that added together give a square (841 = 29²).

The spelling of 702139 in words is "seven hundred two thousand, one hundred thirty-nine".