1043240402 has 4 divisors (see below), whose sum is σ = 1564860606. Its totient is φ = 521620200.

The previous prime is 1043240383. The next prime is 1043240423. The reversal of 1043240402 is 2040423401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2040423401 = 43 ⋅47451707.

It can be written as a sum of positive squares in only one way, i.e., 711235561 + 332004841 = 26669^2 + 18221^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 260810099 + ... + 260810102.

Almost surely, 2^1043240402 is an apocalyptic number.

1043240402 is a deficient number, since it is larger than the sum of its proper divisors (521620204).

1043240402 is an equidigital number, since it uses as much as digits as its factorization.

1043240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521620203.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1043240402 is about 32299.2322199770. The cubic root of 1043240402 is about 1014.2105704582.

Adding to 1043240402 its reverse (2040423401), we get a palindrome (3083663803).

The spelling of 1043240402 in words is "one billion, forty-three million, two hundred forty thousand, four hundred two".