5642728842 has 16 divisors (see below), whose sum is σ = 11949308352. Its totient is φ = 1770267840.

The previous prime is 5642728837. The next prime is 5642728849. The reversal of 5642728842 is 2488272465.

It is a junction number, because it is equal to n+sod(n) for n = 5642728791 and 5642728800.

It is not an unprimeable number, because it can be changed into a prime (5642728849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27660334 + ... + 27660537.

It is an arithmetic number, because the mean of its divisors is an integer number (746831772).

Almost surely, 2^5642728842 is an apocalyptic number.

5642728842 is an abundant number, since it is smaller than the sum of its proper divisors (6306579510).

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

5642728842 is a wasteful number, since it uses less digits than its factorization.

5642728842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55320893.

The product of its digits is 1720320, while the sum is 48.

The square root of 5642728842 is about 75118.0992970403. The cubic root of 5642728842 is about 1780.3131252784.

The spelling of 5642728842 in words is "five billion, six hundred forty-two million, seven hundred twenty-eight thousand, eight hundred forty-two".