1442512561 has 4 divisors (see below), whose sum is σ = 1648585792. Its totient is φ = 1236439332.

The previous prime is 1442512559. The next prime is 1442512571. The reversal of 1442512561 is 1652152441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1652152441 = 41 ⋅40296401.

It is a cyclic number.

It is not a de Polignac number, because 1442512561 - 2¹ = 1442512559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1442512531) 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, 103036605 + ... + 103036618.

It is an arithmetic number, because the mean of its divisors is an integer number (412146448).

Almost surely, 2^1442512561 is an apocalyptic number.

It is an amenable number.

1442512561 is a deficient number, since it is larger than the sum of its proper divisors (206073231).

1442512561 is an equidigital number, since it uses as much as digits as its factorization.

1442512561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206073230.

The product of its digits is 9600, while the sum is 31.

The square root of 1442512561 is about 37980.4233915316. The cubic root of 1442512561 is about 1129.8996337098.

The spelling of 1442512561 in words is "one billion, four hundred forty-two million, five hundred twelve thousand, five hundred sixty-one".