1242143133 has 16 divisors (see below), whose sum is σ = 2064861696. Its totient is φ = 645269040.

The previous prime is 1242143101. The next prime is 1242143137. The reversal of 1242143133 is 3313412421.

It is a happy number.

It is not a de Polignac number, because 1242143133 - 2⁵ = 1242143101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242143137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2688391 + ... + 2688852.

It is an arithmetic number, because the mean of its divisors is an integer number (129053856).

Almost surely, 2^1242143133 is an apocalyptic number.

It is an amenable number.

1242143133 is a deficient number, since it is larger than the sum of its proper divisors (822718563).

1242143133 is a wasteful number, since it uses less digits than its factorization.

1242143133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377264.

The product of its digits is 1728, while the sum is 24.

The square root of 1242143133 is about 35244.0510299256. The cubic root of 1242143133 is about 1074.9556521817.

Adding to 1242143133 its reverse (3313412421), we get a palindrome (4555555554).

The spelling of 1242143133 in words is "one billion, two hundred forty-two million, one hundred forty-three thousand, one hundred thirty-three".