139520706 has 16 divisors (see below), whose sum is σ = 300506304. Its totient is φ = 42929424.

The previous prime is 139520699. The next prime is 139520741. The reversal of 139520706 is 607025931.

It is an unprimeable number.

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, 894286 + ... + 894441.

It is an arithmetic number, because the mean of its divisors is an integer number (18781644).

Almost surely, 2^139520706 is an apocalyptic number.

139520706 is an abundant number, since it is smaller than the sum of its proper divisors (160985598).

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

139520706 is a wasteful number, since it uses less digits than its factorization.

139520706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788745.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 139520706 is about 11811.8883333699. Note that the first 3 decimals coincide. The cubic root of 139520706 is about 518.6561776225.

The spelling of 139520706 in words is "one hundred thirty-nine million, five hundred twenty thousand, seven hundred six".