1442500561 has 4 divisors (see below), whose sum is σ = 1442947252. Its totient is φ = 1442053872.

The previous prime is 1442500531. The next prime is 1442500573. The reversal of 1442500561 is 1650052441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1105961536 + 336539025 = 33256^2 + 18345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442500561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442500511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218466 + ... + 224971.

It is an arithmetic number, because the mean of its divisors is an integer number (360736813).

Almost surely, 2^1442500561 is an apocalyptic number.

It is an amenable number.

1442500561 is a deficient number, since it is larger than the sum of its proper divisors (446691).

1442500561 is an equidigital number, since it uses as much as digits as its factorization.

1442500561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446690.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1442500561 is about 37980.2654150810. The cubic root of 1442500561 is about 1129.8965005579.

The spelling of 1442500561 in words is "one billion, four hundred forty-two million, five hundred thousand, five hundred sixty-one".