139002403 has 2 divisors, whose sum is σ = 139002404. Its totient is φ = 139002402.

The previous prime is 139002401. The next prime is 139002427. The reversal of 139002403 is 304200931.

It is a weak prime.

It is an emirp because it is prime and its reverse (304200931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139002403 - 2¹ = 139002401 is a prime.

Together with 139002401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139002401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69501201 + 69501202.

It is an arithmetic number, because the mean of its divisors is an integer number (69501202).

Almost surely, 2^139002403 is an apocalyptic number.

139002403 is a deficient number, since it is larger than the sum of its proper divisors (1).

139002403 is an equidigital number, since it uses as much as digits as its factorization.

139002403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 139002403 is about 11789.9280320111. The cubic root of 139002403 is about 518.0131318009.

The spelling of 139002403 in words is "one hundred thirty-nine million, two thousand, four hundred three".