1042521231 has 8 divisors (see below), whose sum is σ = 1392473520. Its totient is φ = 693791552.

The previous prime is 1042521229. The next prime is 1042521247. The reversal of 1042521231 is 1321252401.

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 1042521231 - 2¹ = 1042521229 is a prime.

It is a super-2 number, since 2×1042521231² = 2173701034171510722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1042521198 and 1042521207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042521211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303660 + ... + 307073.

It is an arithmetic number, because the mean of its divisors is an integer number (174059190).

Almost surely, 2^1042521231 is an apocalyptic number.

1042521231 is a deficient number, since it is larger than the sum of its proper divisors (349952289).

1042521231 is an equidigital number, since it uses as much as digits as its factorization.

1042521231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611305.

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

The square root of 1042521231 is about 32288.0973580049. The cubic root of 1042521231 is about 1013.9774639125.

Adding to 1042521231 its reverse (1321252401), we get a palindrome (2363773632).

The spelling of 1042521231 in words is "one billion, forty-two million, five hundred twenty-one thousand, two hundred thirty-one".