139322061 has 12 divisors (see below), whose sum is σ = 208182780. Its totient is φ = 89678400.

The previous prime is 139321961. The next prime is 139322077. The reversal of 139322061 is 160223931.

139322061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40717161 + 98604900 = 6381^2 + 9930^2 .

It is not a de Polignac number, because 139322061 - 2⁷ = 139321933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139322081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266640 + ... + 267161.

It is an arithmetic number, because the mean of its divisors is an integer number (17348565).

Almost surely, 2^139322061 is an apocalyptic number.

It is an amenable number.

139322061 is a deficient number, since it is larger than the sum of its proper divisors (68860719).

139322061 is a wasteful number, since it uses less digits than its factorization.

139322061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533836 (or 533833 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 139322061 is about 11803.4766488522. The cubic root of 139322061 is about 518.4099121654.

Adding to 139322061 its reverse (160223931), we get a palindrome (299545992).

The spelling of 139322061 in words is "one hundred thirty-nine million, three hundred twenty-two thousand, sixty-one".