2139140572 has 12 divisors (see below), whose sum is σ = 3872582280. Its totient is φ = 1032688496.

The previous prime is 2139140569. The next prime is 2139140573. The reversal of 2139140572 is 2750419312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139140573) 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 3 ways as a sum of consecutive naturals, for example, 9220318 + ... + 9220549.

It is an arithmetic number, because the mean of its divisors is an integer number (322715190).

Almost surely, 2^2139140572 is an apocalyptic number.

It is an amenable number.

2139140572 is a deficient number, since it is larger than the sum of its proper divisors (1733441708).

2139140572 is a wasteful number, since it uses less digits than its factorization.

2139140572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18440900 (or 18440898 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2139140572 is about 46250.8440139204. The cubic root of 2139140572 is about 1288.4862101904.

Adding to 2139140572 its reverse (2750419312), we get a palindrome (4889559884).

The spelling of 2139140572 in words is "two billion, one hundred thirty-nine million, one hundred forty thousand, five hundred seventy-two".