1243410042 has 32 divisors (see below), whose sum is σ = 2843148672. Its totient is φ = 355126464.

The previous prime is 1243410029. The next prime is 1243410043. The reversal of 1243410042 is 2400143421.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1243410043) 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 15 ways as a sum of consecutive naturals, for example, 181308 + ... + 188040.

It is an arithmetic number, because the mean of its divisors is an integer number (88848396).

Almost surely, 2^1243410042 is an apocalyptic number.

1243410042 is an abundant number, since it is smaller than the sum of its proper divisors (1599738630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243410042 is a wasteful number, since it uses less digits than its factorization.

1243410042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1243410042 is about 35262.0198230334. The cubic root of 1243410042 is about 1075.3209907132.

Adding to 1243410042 its reverse (2400143421), we get a palindrome (3643553463).

The spelling of 1243410042 in words is "one billion, two hundred forty-three million, four hundred ten thousand, forty-two".