2142430728 has 64 divisors (see below), whose sum is σ = 5775537600. Its totient is φ = 660049920.

The previous prime is 2142430727. The next prime is 2142430757. The reversal of 2142430728 is 8270342412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2142430727) 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 15 ways as a sum of consecutive naturals, for example, 38601 + ... + 75992.

It is an arithmetic number, because the mean of its divisors is an integer number (90242775).

Almost surely, 2^2142430728 is an apocalyptic number.

It is an amenable number.

2142430728 is an abundant number, since it is smaller than the sum of its proper divisors (3633106872).

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

2142430728 is a wasteful number, since it uses less digits than its factorization.

2142430728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114662 (or 114658 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 2142430728 is about 46286.3989526081. The cubic root of 2142430728 is about 1289.1464674113.

The spelling of 2142430728 in words is "two billion, one hundred forty-two million, four hundred thirty thousand, seven hundred twenty-eight".