1023454040 has 128 divisors (see below), whose sum is σ = 2721116160. Its totient is φ = 339116544.

The previous prime is 1023453983. The next prime is 1023454063. The reversal of 1023454040 is 404543201.

It is a junction number, because it is equal to n+sod(n) for n = 1023453997 and 1023454015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2310059 + ... + 2310501.

It is an arithmetic number, because the mean of its divisors is an integer number (21258720).

Almost surely, 2^1023454040 is an apocalyptic number.

1023454040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023454040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360558080).

1023454040 is an abundant number, since it is smaller than the sum of its proper divisors (1697662120).

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

1023454040 is a wasteful number, since it uses less digits than its factorization.

1023454040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1023454040 is about 31991.4682376411. The cubic root of 1023454040 is about 1007.7576761708.

Adding to 1023454040 its reverse (404543201), we get a palindrome (1427997241).

The spelling of 1023454040 in words is "one billion, twenty-three million, four hundred fifty-four thousand, forty".