139802061 has 16 divisors (see below), whose sum is σ = 214591104. Its totient is φ = 79302144.

The previous prime is 139802051. The next prime is 139802099. The reversal of 139802061 is 160208931.

139802061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139802061 - 2⁶ = 139801997 is a prime.

It is a super-4 number, since 4×139802061⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139802041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21420 + ... + 27173.

It is an arithmetic number, because the mean of its divisors is an integer number (13411944).

Almost surely, 2^139802061 is an apocalyptic number.

It is an amenable number.

139802061 is a deficient number, since it is larger than the sum of its proper divisors (74789043).

139802061 is a wasteful number, since it uses less digits than its factorization.

139802061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48740.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 139802061 is about 11823.7921581868. The cubic root of 139802061 is about 519.0045811721.

The spelling of 139802061 in words is "one hundred thirty-nine million, eight hundred two thousand, sixty-one".