139281035 has 4 divisors (see below), whose sum is σ = 167137248. Its totient is φ = 111424824.

The previous prime is 139281013. The next prime is 139281053. The reversal of 139281035 is 530182931.

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

It is a cyclic number.

It is not a de Polignac number, because 139281035 - 2⁶ = 139280971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139280992 and 139281010.

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 3 ways as a sum of consecutive naturals, for example, 13928099 + ... + 13928108.

It is an arithmetic number, because the mean of its divisors is an integer number (41784312).

Almost surely, 2^139281035 is an apocalyptic number.

139281035 is a deficient number, since it is larger than the sum of its proper divisors (27856213).

139281035 is an equidigital number, since it uses as much as digits as its factorization.

139281035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27856212.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 139281035 is about 11801.7386430983. The cubic root of 139281035 is about 518.3590219885.

The spelling of 139281035 in words is "one hundred thirty-nine million, two hundred eighty-one thousand, thirty-five".