1142312403 has 4 divisors (see below), whose sum is σ = 1523083208. Its totient is φ = 761541600.

The previous prime is 1142312401. The next prime is 1142312417. The reversal of 1142312403 is 3042132411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1142312403 - 2¹ = 1142312401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142312403.

It is not an unprimeable number, because it can be changed into a prime (1142312401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190385398 + ... + 190385403.

It is an arithmetic number, because the mean of its divisors is an integer number (380770802).

Almost surely, 2^1142312403 is an apocalyptic number.

1142312403 is a deficient number, since it is larger than the sum of its proper divisors (380770805).

1142312403 is an equidigital number, since it uses as much as digits as its factorization.

1142312403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380770804.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1142312403 is about 33798.1124177076. The cubic root of 1142312403 is about 1045.3497766107.

Adding to 1142312403 its reverse (3042132411), we get a palindrome (4184444814).

The spelling of 1142312403 in words is "one billion, one hundred forty-two million, three hundred twelve thousand, four hundred three".