1101431042 has 4 divisors (see below), whose sum is σ = 1652146566. Its totient is φ = 550715520.

The previous prime is 1101431033. The next prime is 1101431047. The reversal of 1101431042 is 2401341011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2401341011 = 19 ⋅126386369.

It can be written as a sum of positive squares in only one way, i.e., 642571801 + 458859241 = 25349^2 + 21421^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1101431042.

It is not an unprimeable number, because it can be changed into a prime (1101431047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275357759 + ... + 275357762.

Almost surely, 2^1101431042 is an apocalyptic number.

1101431042 is a deficient number, since it is larger than the sum of its proper divisors (550715524).

1101431042 is an equidigital number, since it uses as much as digits as its factorization.

1101431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550715523.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1101431042 is about 33187.8146614085. The cubic root of 1101431042 is about 1032.7275688083.

Adding to 1101431042 its reverse (2401341011), we get a palindrome (3502772053).

The spelling of 1101431042 in words is "one billion, one hundred one million, four hundred thirty-one thousand, forty-two".