2102342656 has 22 divisors (see below), whose sum is σ = 4202634290. Its totient is φ = 1051170816.

The previous prime is 2102342653. The next prime is 2102342663. The reversal of 2102342656 is 6562432012.

It can be written as a sum of positive squares in only one way, i.e., 1899565056 + 202777600 = 43584^2 + 14240^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102342651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025511 + ... + 1027558.

Almost surely, 2^2102342656 is an apocalyptic number.

It is an amenable number.

2102342656 is a deficient number, since it is larger than the sum of its proper divisors (2100291634).

2102342656 is an equidigital number, since it uses as much as digits as its factorization.

2102342656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053089 (or 2053071 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2102342656 is about 45851.3102975258. The cubic root of 2102342656 is about 1281.0551715940.

Adding to 2102342656 its reverse (6562432012), we get a palindrome (8664774668).

The spelling of 2102342656 in words is "two billion, one hundred two million, three hundred forty-two thousand, six hundred fifty-six".