1002420267828 has 48 divisors (see below), whose sum is σ = 2765297297280. Its totient is φ = 276529728384.

The previous prime is 1002420267809. The next prime is 1002420267833. The reversal of 1002420267828 is 8287620242001.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1002420267828.

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, 205748851 + ... + 205753722.

It is an arithmetic number, because the mean of its divisors is an integer number (57610360360).

Almost surely, 2^{1002420267828} is an apocalyptic number.

It is an amenable number.

1002420267828 is an abundant number, since it is smaller than the sum of its proper divisors (1762877029452).

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

1002420267828 is a wasteful number, since it uses less digits than its factorization.

1002420267828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411502616 (or 411502614 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 1002420267828 in words is "one trillion, two billion, four hundred twenty million, two hundred sixty-seven thousand, eight hundred twenty-eight".