5185221142 has 4 divisors (see below), whose sum is σ = 7777831716. Its totient is φ = 2592610570.

The previous prime is 5185221137. The next prime is 5185221157. The reversal of 5185221142 is 2411225815.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1296305284 + ... + 1296305287.

It is an arithmetic number, because the mean of its divisors is an integer number (1944457929).

Almost surely, 2^5185221142 is an apocalyptic number.

5185221142 is a deficient number, since it is larger than the sum of its proper divisors (2592610574).

5185221142 is a wasteful number, since it uses less digits than its factorization.

5185221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592610573.

The product of its digits is 6400, while the sum is 31.

The square root of 5185221142 is about 72008.4796534408. The cubic root of 5185221142 is about 1730.8353681076.

Adding to 5185221142 its reverse (2411225815), we get a palindrome (7596446957).

The spelling of 5185221142 in words is "five billion, one hundred eighty-five million, two hundred twenty-one thousand, one hundred forty-two".