15305212142442 has 48 divisors (see below), whose sum is σ = 33712426612800. Its totient is φ = 5017201839936.

The previous prime is 15305212142383. The next prime is 15305212142443. The reversal of 15305212142442 is 24424121250351.

15305212142442 is a `hidden beast` number, since 1 + 5 + 3 + 0 + 52 + 121 + 42 + 442 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15305212142397 and 15305212142406.

It is not an unprimeable number, because it can be changed into a prime (15305212142443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9871003 + ... + 11315790.

It is an arithmetic number, because the mean of its divisors is an integer number (702342221100).

Almost surely, 2^{15305212142442} is an apocalyptic number.

15305212142442 is an abundant number, since it is smaller than the sum of its proper divisors (18407214470358).

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

15305212142442 is a wasteful number, since it uses less digits than its factorization.

15305212142442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21187467 (or 21187464 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 15305212142442 its reverse (24424121250351), we get a palindrome (39729333392793).

The spelling of 15305212142442 in words is "fifteen trillion, three hundred five billion, two hundred twelve million, one hundred forty-two thousand, four hundred forty-two".