1142120403 has 12 divisors (see below), whose sum is σ = 1694317248. Its totient is φ = 740834640.

The previous prime is 1142120347. The next prime is 1142120417. The reversal of 1142120403 is 3040212411.

1142120403 is a `hidden beast` number, since 1 + 142 + 120 + 403 = 666.

It is not a de Polignac number, because 1142120403 - 2¹⁰ = 1142119379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142120003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1714563 + ... + 1715228.

It is an arithmetic number, because the mean of its divisors is an integer number (141193104).

Almost surely, 2^1142120403 is an apocalyptic number.

1142120403 is a deficient number, since it is larger than the sum of its proper divisors (552196845).

1142120403 is a wasteful number, since it uses less digits than its factorization.

1142120403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429834 (or 3429831 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1142120403 is about 33795.2719030340. The cubic root of 1142120403 is about 1045.2912058255.

Adding to 1142120403 its reverse (3040212411), we get a palindrome (4182332814).

The spelling of 1142120403 in words is "one billion, one hundred forty-two million, one hundred twenty thousand, four hundred three".