1021040303420 has 12 divisors (see below), whose sum is σ = 2144184637224. Its totient is φ = 408416121360.

The previous prime is 1021040303407. The next prime is 1021040303429. The reversal of 1021040303420 is 243030401201.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 51052015171 = 1021040303420 / (1 + 0 + 2 + 1 + 0 + 4 + 0 + 3 + 0 + 3 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1021040303392 and 1021040303401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021040303429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25526007566 + ... + 25526007605.

It is an arithmetic number, because the mean of its divisors is an integer number (178682053102).

Almost surely, 2^{1021040303420} is an apocalyptic number.

1021040303420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021040303420 is an abundant number, since it is smaller than the sum of its proper divisors (1123144333804).

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

1021040303420 is a wasteful number, since it uses less digits than its factorization.

1021040303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51052015180 (or 51052015178 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1021040303420 its reverse (243030401201), we get a palindrome (1264070704621).

The spelling of 1021040303420 in words is "one trillion, twenty-one billion, forty million, three hundred three thousand, four hundred twenty".