3102321440242 has 4 divisors (see below), whose sum is σ = 4653482160366. Its totient is φ = 1551160720120.

The previous prime is 3102321440233. The next prime is 3102321440287. The reversal of 3102321440242 is 2420441232013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1603310555961 + 1499010884281 = 1266219^2 + 1224341^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3102321440242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775580360059 + ... + 775580360062.

Almost surely, 2^{3102321440242} is an apocalyptic number.

3102321440242 is a deficient number, since it is larger than the sum of its proper divisors (1551160720124).

3102321440242 is a wasteful number, since it uses less digits than its factorization.

3102321440242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551160720123.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 3102321440242 its reverse (2420441232013), we get a palindrome (5522762672255).

The spelling of 3102321440242 in words is "three trillion, one hundred two billion, three hundred twenty-one million, four hundred forty thousand, two hundred forty-two".