1040402312 has 24 divisors (see below), whose sum is σ = 2072259210. Its totient is φ = 489600000.

The previous prime is 1040402303. The next prime is 1040402317. The reversal of 1040402312 is 2132040401.

It can be written as a sum of positive squares in 3 ways, for example, as 1040320516 + 81796 = 32254^2 + 286^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1040402317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222689 + ... + 227312.

Almost surely, 2^1040402312 is an apocalyptic number.

It is an amenable number.

1040402312 is a deficient number, since it is larger than the sum of its proper divisors (1031856898).

1040402312 is a wasteful number, since it uses less digits than its factorization.

1040402312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450041 (or 450020 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1040402312 is about 32255.2679728444. The cubic root of 1040402312 is about 1013.2900299862.

Adding to 1040402312 its reverse (2132040401), we get a palindrome (3172442713).

The spelling of 1040402312 in words is "one billion, forty million, four hundred two thousand, three hundred twelve".