1040021231420 has 12 divisors (see below), whose sum is σ = 2184044586024. Its totient is φ = 416008492560.

The previous prime is 1040021231369. The next prime is 1040021231437. The reversal of 1040021231420 is 241321200401.

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: 52001061571 = 1040021231420 / (1 + 0 + 4 + 0 + 0 + 2 + 1 + 2 + 3 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1040021231392 and 1040021231401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26000530766 + ... + 26000530805.

It is an arithmetic number, because the mean of its divisors is an integer number (182003715502).

Almost surely, 2^{1040021231420} is an apocalyptic number.

1040021231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040021231420 is an abundant number, since it is smaller than the sum of its proper divisors (1144023354604).

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

1040021231420 is a wasteful number, since it uses less digits than its factorization.

1040021231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52001061580 (or 52001061578 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1040021231420 its reverse (241321200401), we get a palindrome (1281342431821).

The spelling of 1040021231420 in words is "one trillion, forty billion, twenty-one million, two hundred thirty-one thousand, four hundred twenty".