139102834 has 16 divisors (see below), whose sum is σ = 225435672. Its totient is φ = 63992448.

The previous prime is 139102811. The next prime is 139102837. The reversal of 139102834 is 438201931.

It can be written as a sum of positive squares in 4 ways, for example, as 51624225 + 87478609 = 7185^2 + 9353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139102796 and 139102805.

It is not an unprimeable number, because it can be changed into a prime (139102837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409 + ... + 16684.

Almost surely, 2^139102834 is an apocalyptic number.

139102834 is a deficient number, since it is larger than the sum of its proper divisors (86332838).

139102834 is a wasteful number, since it uses less digits than its factorization.

139102834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17421.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 139102834 is about 11794.1864492639. The cubic root of 139102834 is about 518.1378587871.

The spelling of 139102834 in words is "one hundred thirty-nine million, one hundred two thousand, eight hundred thirty-four".