139132429 has 4 divisors (see below), whose sum is σ = 139251420. Its totient is φ = 139013440.

The previous prime is 139132423. The next prime is 139132439. The reversal of 139132429 is 924231931.

139132429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128255625 + 10876804 = 11325^2 + 3298^2 .

It is a cyclic number.

It is not a de Polignac number, because 139132429 - 2⁵ = 139132397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139132394 and 139132403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139132423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57724 + ... + 60085.

It is an arithmetic number, because the mean of its divisors is an integer number (34812855).

Almost surely, 2^139132429 is an apocalyptic number.

It is an amenable number.

139132429 is a deficient number, since it is larger than the sum of its proper divisors (118991).

139132429 is a wasteful number, since it uses less digits than its factorization.

139132429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118990.

The product of its digits is 11664, while the sum is 34.

The square root of 139132429 is about 11795.4410260914. The cubic root of 139132429 is about 518.1746018740.

The spelling of 139132429 in words is "one hundred thirty-nine million, one hundred thirty-two thousand, four hundred twenty-nine".