1042321225 has 27 divisors (see below), whose sum is σ = 1423082311. Its totient is φ = 756760400.

The previous prime is 1042321223. The next prime is 1042321237. The reversal of 1042321225 is 5221232401.

It is a happy number.

The square root of 1042321225 is 32285.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 375235641 + 667085584 = 19371^2 + 25828^2 .

It is not a de Polignac number, because 1042321225 - 2¹ = 1042321223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042321196 and 1042321205.

It is not an unprimeable number, because it can be changed into a prime (1042321223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1775382 + ... + 1775968.

Almost surely, 2^1042321225 is an apocalyptic number.

1042321225 is the 32285-th square number.

1042321225 is the 16143-rd centered octagonal number.

It is an amenable number.

1042321225 is a deficient number, since it is larger than the sum of its proper divisors (380761086).

1042321225 is an frugal number, since it uses more digits than its factorization.

1042321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The cubic root of 1042321225 is about 1013.9126164571.

Adding to 1042321225 its reverse (5221232401), we get a palindrome (6263553626).

The spelling of 1042321225 in words is "one billion, forty-two million, three hundred twenty-one thousand, two hundred twenty-five".