139561003 has 8 divisors (see below), whose sum is σ = 144168048. Its totient is φ = 134997984.

The previous prime is 139560991. The next prime is 139561013. The reversal of 139561003 is 300165931.

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-139561003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139561013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4501 + ... + 17302.

It is an arithmetic number, because the mean of its divisors is an integer number (18021006).

Almost surely, 2^139561003 is an apocalyptic number.

139561003 is a deficient number, since it is larger than the sum of its proper divisors (4607045).

139561003 is a wasteful number, since it uses less digits than its factorization.

139561003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22013.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 139561003 is about 11813.5939916691. The cubic root of 139561003 is about 518.7061063553.

The spelling of 139561003 in words is "one hundred thirty-nine million, five hundred sixty-one thousand, three".