1042251321 has 8 divisors (see below), whose sum is σ = 1405283040. Its totient is φ = 687026912.

The previous prime is 1042251311. The next prime is 1042251347. The reversal of 1042251321 is 1231522401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1042251321 - 2⁹ = 1042250809 is a prime.

It is a super-2 number, since 2×1042251321² = 2172575632252490082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1042251311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951515 + ... + 1952048.

It is an arithmetic number, because the mean of its divisors is an integer number (175660380).

Almost surely, 2^1042251321 is an apocalyptic number.

It is an amenable number.

1042251321 is a deficient number, since it is larger than the sum of its proper divisors (363031719).

1042251321 is an equidigital number, since it uses as much as digits as its factorization.

1042251321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903655.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1042251321 is about 32283.9173738256. The cubic root of 1042251321 is about 1013.8899496981.

Adding to 1042251321 its reverse (1231522401), we get a palindrome (2273773722).

The spelling of 1042251321 in words is "one billion, forty-two million, two hundred fifty-one thousand, three hundred twenty-one".