1445540242 has 8 divisors (see below), whose sum is σ = 2168525196. Its totient is φ = 722698512.

The previous prime is 1445540227. The next prime is 1445540251. The reversal of 1445540242 is 2420455441.

It can be written as a sum of positive squares in 2 ways, for example, as 1428159681 + 17380561 = 37791^2 + 4169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5413 + ... + 54040.

Almost surely, 2^1445540242 is an apocalyptic number.

1445540242 is a deficient number, since it is larger than the sum of its proper divisors (722984954).

1445540242 is a wasteful number, since it uses less digits than its factorization.

1445540242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71612.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 1445540242 is about 38020.2609407142. The cubic root of 1445540242 is about 1130.6895944839.

Adding to 1445540242 its reverse (2420455441), we get a palindrome (3865995683).

The spelling of 1445540242 in words is "one billion, four hundred forty-five million, five hundred forty thousand, two hundred forty-two".