1043613021 has 24 divisors (see below), whose sum is σ = 1546715520. Its totient is φ = 625366720.

The previous prime is 1043613001. The next prime is 1043613023. The reversal of 1043613021 is 1203163401.

It is not a de Polignac number, because 1043613021 - 2¹⁴ = 1043596637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043613023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16156 + ... + 48458.

It is an arithmetic number, because the mean of its divisors is an integer number (64446480).

Almost surely, 2^1043613021 is an apocalyptic number.

1043613021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1043613021 is a deficient number, since it is larger than the sum of its proper divisors (503102499).

1043613021 is a wasteful number, since it uses less digits than its factorization.

1043613021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32417 (or 32406 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1043613021 is about 32304.9999380901. Note that the first 4 decimals coincide. The cubic root of 1043613021 is about 1014.3313061784.

Adding to 1043613021 its reverse (1203163401), we get a palindrome (2246776422).

The spelling of 1043613021 in words is "one billion, forty-three million, six hundred thirteen thousand, twenty-one".