1000020444240 has 80 divisors (see below), whose sum is σ = 3263224622400. Its totient is φ = 252636742656.

The previous prime is 1000020444223. The next prime is 1000020444251. The reversal of 1000020444240 is 424440200001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109646805 + ... + 109655924.

It is an arithmetic number, because the mean of its divisors is an integer number (40790307780).

Almost surely, 2^{1000020444240} is an apocalyptic number.

1000020444240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000020444240 is an abundant number, since it is smaller than the sum of its proper divisors (2263204178160).

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

1000020444240 is a wasteful number, since it uses less digits than its factorization.

1000020444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219302764 (or 219302758 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 1000020444240 its reverse (424440200001), we get a palindrome (1424460644241).

The spelling of 1000020444240 in words is "one trillion, twenty million, four hundred forty-four thousand, two hundred forty".