1028140242 has 32 divisors (see below), whose sum is σ = 2071567872. Its totient is φ = 340174464.

The previous prime is 1028140241. The next prime is 1028140247. The reversal of 1028140242 is 2420418201.

It is not an unprimeable number, because it can be changed into a prime (1028140241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716758 + ... + 718190.

It is an arithmetic number, because the mean of its divisors is an integer number (64736496).

Almost surely, 2^1028140242 is an apocalyptic number.

1028140242 is an abundant number, since it is smaller than the sum of its proper divisors (1043427630).

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

1028140242 is a wasteful number, since it uses less digits than its factorization.

1028140242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 1028140242 is about 32064.6260230803. The cubic root of 1028140242 is about 1009.2934449943.

Adding to 1028140242 its reverse (2420418201), we get a palindrome (3448558443).

The spelling of 1028140242 in words is "one billion, twenty-eight million, one hundred forty thousand, two hundred forty-two".