1442403456 has 128 divisors (see below), whose sum is σ = 4144741440. Its totient is φ = 441815040.

The previous prime is 1442403419. The next prime is 1442403461. The reversal of 1442403456 is 6543042441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412226 + ... + 1413246.

Almost surely, 2^1442403456 is an apocalyptic number.

1442403456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1442403456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2072370720).

1442403456 is an abundant number, since it is smaller than the sum of its proper divisors (2702337984).

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

1442403456 is a wasteful number, since it uses less digits than its factorization.

1442403456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 1442403456 is about 37978.9870323051. The cubic root of 1442403456 is about 1129.8711461918.

Adding to 1442403456 its reverse (6543042441), we get a palindrome (7985445897).

It can be divided in two parts, 144240 and 3456, that added together give a triangular number (147696 = T₅₄₃).

The spelling of 1442403456 in words is "one billion, four hundred forty-two million, four hundred three thousand, four hundred fifty-six".