1442052521 has 32 divisors (see below), whose sum is σ = 1846790400. Its totient is φ = 1095171840.

The previous prime is 1442052509. The next prime is 1442052527. The reversal of 1442052521 is 1252502441.

It is a de Polignac number, because none of the positive numbers 2^k-1442052521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1442052527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476150 + ... + 479168.

It is an arithmetic number, because the mean of its divisors is an integer number (57712200).

Almost surely, 2^1442052521 is an apocalyptic number.

It is an amenable number.

1442052521 is a deficient number, since it is larger than the sum of its proper divisors (404737879).

1442052521 is a wasteful number, since it uses less digits than its factorization.

1442052521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1442052521 is about 37974.3666306628. The cubic root of 1442052521 is about 1129.7795066693.

Adding to 1442052521 its reverse (1252502441), we get a palindrome (2694554962).

The spelling of 1442052521 in words is "one billion, four hundred forty-two million, fifty-two thousand, five hundred twenty-one".