2139420968 has 48 divisors (see below), whose sum is σ = 4147946880. Its totient is φ = 1033919712.

The previous prime is 2139420961. The next prime is 2139420979. The reversal of 2139420968 is 8690249312.

It is not an unprimeable number, because it can be changed into a prime (2139420961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9593705 + ... + 9593927.

It is an arithmetic number, because the mean of its divisors is an integer number (86415560).

Almost surely, 2^2139420968 is an apocalyptic number.

It is an amenable number.

2139420968 is a deficient number, since it is larger than the sum of its proper divisors (2008525912).

2139420968 is a wasteful number, since it uses less digits than its factorization.

2139420968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 2139420968 is about 46253.8751673846. The cubic root of 2139420968 is about 1288.5425054770.

The spelling of 2139420968 in words is "two billion, one hundred thirty-nine million, four hundred twenty thousand, nine hundred sixty-eight".