1040021450 has 24 divisors (see below), whose sum is σ = 2083244268. Its totient is φ = 384007680.

The previous prime is 1040021443. The next prime is 1040021459. The reversal of 1040021450 is 541200401.

It can be written as a sum of positive squares in 6 ways, for example, as 192571129 + 847450321 = 13877^2 + 29111^2 .

It is not an unprimeable number, because it can be changed into a prime (1040021459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 799367 + ... + 800666.

Almost surely, 2^1040021450 is an apocalyptic number.

1040021450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1040021450 is an abundant number, since it is smaller than the sum of its proper divisors (1043222818).

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

1040021450 is a wasteful number, since it uses less digits than its factorization.

1040021450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600058 (or 1600053 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1040021450 is about 32249.3635596115. The cubic root of 1040021450 is about 1013.1663692432.

Adding to 1040021450 its reverse (541200401), we get a palindrome (1581221851).

The spelling of 1040021450 in words is "one billion, forty million, twenty-one thousand, four hundred fifty".