139142267 has 4 divisors (see below), whose sum is σ = 151791576. Its totient is φ = 126492960.

The previous prime is 139142243. The next prime is 139142273. The reversal of 139142267 is 762241931.

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

It is not a de Polignac number, because 139142267 - 2¹² = 139138171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139142767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6324638 + ... + 6324659.

It is an arithmetic number, because the mean of its divisors is an integer number (37947894).

Almost surely, 2^139142267 is an apocalyptic number.

139142267 is a deficient number, since it is larger than the sum of its proper divisors (12649309).

139142267 is a wasteful number, since it uses less digits than its factorization.

139142267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649308.

The product of its digits is 18144, while the sum is 35.

The square root of 139142267 is about 11795.8580442459. The cubic root of 139142267 is about 518.1868148944.

The spelling of 139142267 in words is "one hundred thirty-nine million, one hundred forty-two thousand, two hundred sixty-seven".