1042204321 has 4 divisors (see below), whose sum is σ = 1097057200. Its totient is φ = 987351444.

The previous prime is 1042204301. The next prime is 1042204333. The reversal of 1042204321 is 1234022401.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042204321 is a prime.

It is a super-2 number, since 2×1042204321² = 2172379693422142082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 54852859 = 1042204321 / (1 + 0 + 4 + 2 + 2 + 0 + 4 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042204301) 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, 27426411 + ... + 27426448.

It is an arithmetic number, because the mean of its divisors is an integer number (274264300).

Almost surely, 2^1042204321 is an apocalyptic number.

It is an amenable number.

1042204321 is a deficient number, since it is larger than the sum of its proper divisors (54852879).

1042204321 is an equidigital number, since it uses as much as digits as its factorization.

1042204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54852878.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1042204321 is about 32283.1894489996. The cubic root of 1042204321 is about 1013.8747091181.

Adding to 1042204321 its reverse (1234022401), we get a palindrome (2276226722).

The spelling of 1042204321 in words is "one billion, forty-two million, two hundred four thousand, three hundred twenty-one".