521241442 has 16 divisors (see below), whose sum is σ = 801073152. Its totient is φ = 254232720.

The previous prime is 521241419. The next prime is 521241443. The reversal of 521241442 is 244142125.

It is not an unprimeable number, because it can be changed into a prime (521241443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71967 + ... + 78877.

It is an arithmetic number, because the mean of its divisors is an integer number (50067072).

Almost surely, 2^521241442 is an apocalyptic number.

521241442 is a deficient number, since it is larger than the sum of its proper divisors (279831710).

521241442 is a wasteful number, since it uses less digits than its factorization.

521241442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7833.

The product of its digits is 2560, while the sum is 25.

The square root of 521241442 is about 22830.7126914602. The cubic root of 521241442 is about 804.7845787527.

Adding to 521241442 its reverse (244142125), we get a palindrome (765383567).

The spelling of 521241442 in words is "five hundred twenty-one million, two hundred forty-one thousand, four hundred forty-two".