1001254889420 has 48 divisors (see below), whose sum is σ = 2183459217408. Its totient is φ = 385261644480.

The previous prime is 1001254889407. The next prime is 1001254889423. The reversal of 1001254889420 is 249884521001.

It is a super-2 number, since 2×1001254889420² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001254889423) 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, 4731572 + ... + 4938651.

It is an arithmetic number, because the mean of its divisors is an integer number (45488733696).

Almost surely, 2^{1001254889420} is an apocalyptic number.

1001254889420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001254889420 is an abundant number, since it is smaller than the sum of its proper divisors (1182204327988).

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

1001254889420 is a wasteful number, since it uses less digits than its factorization.

1001254889420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9670430 (or 9670428 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 1001254889420 in words is "one trillion, one billion, two hundred fifty-four million, eight hundred eighty-nine thousand, four hundred twenty".