139042003 has 8 divisors (see below), whose sum is σ = 140209200. Its totient is φ = 137879328.

The previous prime is 139041977. The next prime is 139042039. The reversal of 139042003 is 300240931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139042003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139042073) 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 in 7 ways as a sum of consecutive naturals, for example, 87268 + ... + 88846.

It is an arithmetic number, because the mean of its divisors is an integer number (17526150).

Almost surely, 2^139042003 is an apocalyptic number.

139042003 is a deficient number, since it is larger than the sum of its proper divisors (1167197).

139042003 is a wasteful number, since it uses less digits than its factorization.

139042003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261.

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

The square root of 139042003 is about 11791.6073119825. The cubic root of 139042003 is about 518.0623188938.

Adding to 139042003 its reverse (300240931), we get a palindrome (439282934).

The spelling of 139042003 in words is "one hundred thirty-nine million, forty-two thousand, three".