1442003144 has 8 divisors (see below), whose sum is σ = 2703755910. Its totient is φ = 721001568.

The previous prime is 1442003141. The next prime is 1442003177. The reversal of 1442003144 is 4413002441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1066806244 + 375196900 = 32662^2 + 19370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1442003141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90125189 + ... + 90125204.

Almost surely, 2^1442003144 is an apocalyptic number.

It is an amenable number.

1442003144 is a deficient number, since it is larger than the sum of its proper divisors (1261752766).

1442003144 is a wasteful number, since it uses less digits than its factorization.

1442003144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180250399 (or 180250395 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1442003144 is about 37973.7164891718. The cubic root of 1442003144 is about 1129.7666116791.

Adding to 1442003144 its reverse (4413002441), we get a palindrome (5855005585).

The spelling of 1442003144 in words is "one billion, four hundred forty-two million, three thousand, one hundred forty-four".