520281442 has 4 divisors (see below), whose sum is σ = 780422166. Its totient is φ = 260140720.

The previous prime is 520281409. The next prime is 520281469. The reversal of 520281442 is 244182025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 307967401 + 212314041 = 17549^2 + 14571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520281442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130070359 + ... + 130070362.

Almost surely, 2^520281442 is an apocalyptic number.

520281442 is a deficient number, since it is larger than the sum of its proper divisors (260140724).

520281442 is a wasteful number, since it uses less digits than its factorization.

520281442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260140723.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 520281442 is about 22809.6786912924. The cubic root of 520281442 is about 804.2902026161.

The spelling of 520281442 in words is "five hundred twenty million, two hundred eighty-one thousand, four hundred forty-two".