10215144243242 has 16 divisors (see below), whose sum is σ = 15454632279240. Its totient is φ = 5063697113088.

The previous prime is 10215144243193. The next prime is 10215144243259. The reversal of 10215144243242 is 24234244151201.

It can be written as a sum of positive squares in 4 ways, for example, as 8346835249921 + 1868308993321 = 2889089^2 + 1366861^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24029573 + ... + 24450984.

Almost surely, 2^{10215144243242} is an apocalyptic number.

10215144243242 is a deficient number, since it is larger than the sum of its proper divisors (5239488035998).

10215144243242 is a wasteful number, since it uses less digits than its factorization.

10215144243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48481465.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 10215144243242 its reverse (24234244151201), we get a palindrome (34449388394443).

The spelling of 10215144243242 in words is "ten trillion, two hundred fifteen billion, one hundred forty-four million, two hundred forty-three thousand, two hundred forty-two".