139203041 has 4 divisors (see below), whose sum is σ = 140504112. Its totient is φ = 137901972.

The previous prime is 139203023. The next prime is 139203047. The reversal of 139203041 is 140302931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140302931 = 31 ⋅4525901.

It is a cyclic number.

It is not a de Polignac number, because 139203041 - 2¹⁰ = 139202017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139202998 and 139203016.

It is not an unprimeable number, because it can be changed into a prime (139203047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650375 + ... + 650588.

It is an arithmetic number, because the mean of its divisors is an integer number (35126028).

Almost surely, 2^139203041 is an apocalyptic number.

It is an amenable number.

139203041 is a deficient number, since it is larger than the sum of its proper divisors (1301071).

139203041 is a wasteful number, since it uses less digits than its factorization.

139203041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301070.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 139203041 is about 11798.4338367429. The cubic root of 139203041 is about 518.2622477643.

Adding to 139203041 its reverse (140302931), we get a palindrome (279505972).

It can be divided in two parts, 13920 and 3041, that added together give a palindrome (16961).

The spelling of 139203041 in words is "one hundred thirty-nine million, two hundred three thousand, forty-one".