1442154440 has 16 divisors (see below), whose sum is σ = 3244847580. Its totient is φ = 576861760.

The previous prime is 1442154437. The next prime is 1442154481. The reversal of 1442154440 is 444512441.

It can be written as a sum of positive squares in 2 ways, for example, as 1330936324 + 111218116 = 36482^2 + 10546^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18026891 + ... + 18026970.

Almost surely, 2^1442154440 is an apocalyptic number.

1442154440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442154440 is an abundant number, since it is smaller than the sum of its proper divisors (1802693140).

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

1442154440 is a wasteful number, since it uses less digits than its factorization.

1442154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36053872 (or 36053868 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 1442154440 is about 37975.7085516518. The cubic root of 1442154440 is about 1129.8061222706.

Adding to 1442154440 its reverse (444512441), we get a palindrome (1886666881).

The spelling of 1442154440 in words is "one billion, four hundred forty-two million, one hundred fifty-four thousand, four hundred forty".