1142436521 has 16 divisors (see below), whose sum is σ = 1194209280. Its totient is φ = 1091672640.

The previous prime is 1142436517. The next prime is 1142436557. The reversal of 1142436521 is 1256342411.

It is a cyclic number.

It is not a de Polignac number, because 1142436521 - 2² = 1142436517 is a prime.

It is a super-2 number, since 2×1142436521² = 2610322409029166882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142436511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1881800 + ... + 1882406.

It is an arithmetic number, because the mean of its divisors is an integer number (74638080).

Almost surely, 2^1142436521 is an apocalyptic number.

It is an amenable number.

1142436521 is a deficient number, since it is larger than the sum of its proper divisors (51772759).

1142436521 is a wasteful number, since it uses less digits than its factorization.

1142436521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304.

The product of its digits is 5760, while the sum is 29.

The square root of 1142436521 is about 33799.9485354638. The cubic root of 1142436521 is about 1045.3876360801.

Adding to 1142436521 its reverse (1256342411), we get a palindrome (2398778932).

The spelling of 1142436521 in words is "one billion, one hundred forty-two million, four hundred thirty-six thousand, five hundred twenty-one".