2135223642 has 32 divisors (see below), whose sum is σ = 4411090944. Its totient is φ = 688330800.

The previous prime is 2135223641. The next prime is 2135223659. The reversal of 2135223642 is 2463225312.

It is not an unprimeable number, because it can be changed into a prime (2135223641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393673 + ... + 399059.

It is an arithmetic number, because the mean of its divisors is an integer number (137846592).

Almost surely, 2^2135223642 is an apocalyptic number.

2135223642 is an abundant number, since it is smaller than the sum of its proper divisors (2275867302).

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

2135223642 is a wasteful number, since it uses less digits than its factorization.

2135223642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554.

The product of its digits is 17280, while the sum is 30.

The square root of 2135223642 is about 46208.4801957390. The cubic root of 2135223642 is about 1287.6992907578.

Adding to 2135223642 its reverse (2463225312), we get a palindrome (4598448954).

The spelling of 2135223642 in words is "two billion, one hundred thirty-five million, two hundred twenty-three thousand, six hundred forty-two".