2139430104 has 128 divisors (see below), whose sum is σ = 6831936000. Its totient is φ = 607658112.

The previous prime is 2139430103. The next prime is 2139430121. The reversal of 2139430104 is 4010349312.

2139430104 is a `hidden beast` number, since 213 + 9 + 430 + 10 + 4 = 666.

It is a super-2 number, since 2×2139430104² = 9154322339802901632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139430103) 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 31 ways as a sum of consecutive naturals, for example, 257487 + ... + 265665.

It is an arithmetic number, because the mean of its divisors is an integer number (53374500).

Almost surely, 2^2139430104 is an apocalyptic number.

2139430104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139430104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3415968000).

2139430104 is an abundant number, since it is smaller than the sum of its proper divisors (4692505896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139430104 is a wasteful number, since it uses less digits than its factorization.

2139430104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374 (or 8364 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2139430104 is about 46253.9739265720. The cubic root of 2139430104 is about 1288.5443396349.

Adding to 2139430104 its reverse (4010349312), we get a palindrome (6149779416).

The spelling of 2139430104 in words is "two billion, one hundred thirty-nine million, four hundred thirty thousand, one hundred four".