139143922 has 8 divisors (see below), whose sum is σ = 208923372. Its totient is φ = 69502800.

The previous prime is 139143911. The next prime is 139143937. The reversal of 139143922 is 229341931.

It can be written as a sum of positive squares in 2 ways, for example, as 125238481 + 13905441 = 11191^2 + 3729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139143922² = 38722062059084168, which contains 22 as substring.

It is an unprimeable number.

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, 32029 + ... + 36112.

Almost surely, 2^139143922 is an apocalyptic number.

139143922 is a deficient number, since it is larger than the sum of its proper divisors (69779450).

139143922 is a wasteful number, since it uses less digits than its factorization.

139143922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69164.

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

The square root of 139143922 is about 11795.9281957801. The cubic root of 139143922 is about 518.1888693762.

The spelling of 139143922 in words is "one hundred thirty-nine million, one hundred forty-three thousand, nine hundred twenty-two".