1242042444 has 48 divisors (see below), whose sum is σ = 3295008640. Its totient is φ = 404384400.

The previous prime is 1242042443. The next prime is 1242042463. The reversal of 1242042444 is 4442402421.

1242042444 is a `hidden beast` number, since 12 + 4 + 204 + 2 + 444 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1242042443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129082 + ... + 138369.

Almost surely, 2^1242042444 is an apocalyptic number.

It is an amenable number.

1242042444 is an abundant number, since it is smaller than the sum of its proper divisors (2052966196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242042444 is a wasteful number, since it uses less digits than its factorization.

1242042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267507 (or 267499 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1242042444 is about 35242.6225471374. The cubic root of 1242042444 is about 1074.9266058419.

Adding to 1242042444 its reverse (4442402421), we get a palindrome (5684444865).

The spelling of 1242042444 in words is "one billion, two hundred forty-two million, forty-two thousand, four hundred forty-four".