139545403 has 2 divisors, whose sum is σ = 139545404. Its totient is φ = 139545402.

The previous prime is 139545349. The next prime is 139545421. The reversal of 139545403 is 304545931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139545403 - 2²¹ = 137448251 is a prime.

It is not a weakly prime, because it can be changed into another prime (139545803) 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, 69772701 + 69772702.

It is an arithmetic number, because the mean of its divisors is an integer number (69772702).

Almost surely, 2^139545403 is an apocalyptic number.

139545403 is a deficient number, since it is larger than the sum of its proper divisors (1).

139545403 is an equidigital number, since it uses as much as digits as its factorization.

139545403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 139545403 is about 11812.9337169054. The cubic root of 139545403 is about 518.6867788053.

The spelling of 139545403 in words is "one hundred thirty-nine million, five hundred forty-five thousand, four hundred three".