1142424521 has 16 divisors (see below), whose sum is σ = 1352682240. Its totient is φ = 944032320.

The previous prime is 1142424511. The next prime is 1142424551. The reversal of 1142424521 is 1254242411.

It is not a de Polignac number, because 1142424521 - 2³⁰ = 68682697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142424511) 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, 143711 + ... + 151451.

It is an arithmetic number, because the mean of its divisors is an integer number (84542640).

Almost surely, 2^1142424521 is an apocalyptic number.

It is an amenable number.

1142424521 is a deficient number, since it is larger than the sum of its proper divisors (210257719).

1142424521 is an equidigital number, since it uses as much as digits as its factorization.

1142424521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504.

The product of its digits is 2560, while the sum is 26.

The square root of 1142424521 is about 33799.7710199344. The cubic root of 1142424521 is about 1045.3839758635.

Adding to 1142424521 its reverse (1254242411), we get a palindrome (2396666932).

The spelling of 1142424521 in words is "one billion, one hundred forty-two million, four hundred twenty-four thousand, five hundred twenty-one".