139020006 has 16 divisors (see below), whose sum is σ = 278175744. Its totient is φ = 46317384.

The previous prime is 139019987. The next prime is 139020043. The reversal of 139020006 is 600020931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11811 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (17385984).

Almost surely, 2^139020006 is an apocalyptic number.

139020006 is an abundant number, since it is smaller than the sum of its proper divisors (139155738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139020006 is a wasteful number, since it uses less digits than its factorization.

139020006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 139020006 is about 11790.6745354114. The cubic root of 139020006 is about 518.0349976106.

Adding to 139020006 its reverse (600020931), we get a palindrome (739040937).

The spelling of 139020006 in words is "one hundred thirty-nine million, twenty thousand, six".