1021304040455 has 8 divisors (see below), whose sum is σ = 1225574351232. Its totient is φ = 817036897248.

The previous prime is 1021304040413. The next prime is 1021304040509. The reversal of 1021304040455 is 5540404031201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021304040455 - 2¹⁸ = 1021303778311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12887 + ... + 1429256.

It is an arithmetic number, because the mean of its divisors is an integer number (153196793904).

Almost surely, 2^{1021304040455} is an apocalyptic number.

1021304040455 is a deficient number, since it is larger than the sum of its proper divisors (204270310777).

1021304040455 is a wasteful number, since it uses less digits than its factorization.

1021304040455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583785.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 1021304040455 its reverse (5540404031201), we get a palindrome (6561708071656).

The spelling of 1021304040455 in words is "one trillion, twenty-one billion, three hundred four million, forty thousand, four hundred fifty-five".