1000142244 has 36 divisors (see below), whose sum is σ = 2533150620. Its totient is φ = 332719680.

The previous prime is 1000142219. The next prime is 1000142303. The reversal of 1000142244 is 4422410001.

It can be written as a sum of positive squares in 2 ways, for example, as 848556900 + 151585344 = 29130^2 + 12312^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8967 + ... + 45614.

It is an arithmetic number, because the mean of its divisors is an integer number (70365295).

Almost surely, 2^1000142244 is an apocalyptic number.

It is an amenable number.

1000142244 is an abundant number, since it is smaller than the sum of its proper divisors (1533008376).

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

1000142244 is a wasteful number, since it uses less digits than its factorization.

1000142244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100 (or 55095 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1000142244 is about 31625.0255968276. The cubic root of 1000142244 is about 1000.0474124187.

Adding to 1000142244 its reverse (4422410001), we get a palindrome (5422552245).

The spelling of 1000142244 in words is "one billion, one hundred forty-two thousand, two hundred forty-four".