1040021533 has 4 divisors (see below), whose sum is σ = 1042435008. Its totient is φ = 1037608060.

The previous prime is 1040021483. The next prime is 1040021551. The reversal of 1040021533 is 3351200401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3351200401 = 239 ⋅14021759.

It is a cyclic number.

It is not a de Polignac number, because 1040021533 - 2²⁵ = 1006467101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040021533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040021033) 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, 1206091 + ... + 1206952.

It is an arithmetic number, because the mean of its divisors is an integer number (260608752).

Almost surely, 2^1040021533 is an apocalyptic number.

It is an amenable number.

1040021533 is a deficient number, since it is larger than the sum of its proper divisors (2413475).

1040021533 is an equidigital number, since it uses as much as digits as its factorization.

1040021533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413474.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1040021533 is about 32249.3648464586. The cubic root of 1040021533 is about 1013.1663961955.

Adding to 1040021533 its reverse (3351200401), we get a palindrome (4391221934).

The spelling of 1040021533 in words is "one billion, forty million, twenty-one thousand, five hundred thirty-three".