1442040520 has 64 divisors (see below), whose sum is σ = 3336182640. Its totient is φ = 560640000.

The previous prime is 1442040503. The next prime is 1442040541. The reversal of 1442040520 is 250402441.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 636956644 + 805083876 = 25238^2 + 28374^2 .

It is a super-2 number, since 2×1442040520² = 4158961722643740800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1442040491 and 1442040500.

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 15 ways as a sum of consecutive naturals, for example, 479020 + ... + 482020.

Almost surely, 2^1442040520 is an apocalyptic number.

1442040520 is a gapful number since it is divisible by the number (10) 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 1442040520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668091320).

1442040520 is an abundant number, since it is smaller than the sum of its proper divisors (1894142120).

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

1442040520 is a wasteful number, since it uses less digits than its factorization.

1442040520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346 (or 3342 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1442040520 is about 37974.2086158487. The cubic root of 1442040520 is about 1129.7763725898.

Adding to 1442040520 its reverse (250402441), we get a palindrome (1692442961).

The spelling of 1442040520 in words is "one billion, four hundred forty-two million, forty thousand, five hundred twenty".