1001420244 has 144 divisors (see below), whose sum is σ = 2907043776. Its totient is φ = 287884800.

The previous prime is 1001420237. The next prime is 1001420263. The reversal of 1001420244 is 4420241001.

1001420244 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 420 + 244 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 599899 + ... + 601565.

It is an arithmetic number, because the mean of its divisors is an integer number (20187804).

Almost surely, 2^1001420244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001420244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453521888).

1001420244 is an abundant number, since it is smaller than the sum of its proper divisors (1905623532).

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

1001420244 is a wasteful number, since it uses less digits than its factorization.

1001420244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1761 counting only the distinct ones).

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

The square root of 1001420244 is about 31645.2246634465. The cubic root of 1001420244 is about 1000.4731907219.

Adding to 1001420244 its reverse (4420241001), we get a palindrome (5421661245).

The spelling of 1001420244 in words is "one billion, one million, four hundred twenty thousand, two hundred forty-four".