1442043240 has 128 divisors (see below), whose sum is σ = 4729536000. Its totient is φ = 348837120.

The previous prime is 1442043203. The next prime is 1442043257. The reversal of 1442043240 is 423402441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1442043240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847911 + ... + 849609.

It is an arithmetic number, because the mean of its divisors is an integer number (36949500).

Almost surely, 2^1442043240 is an apocalyptic number.

1442043240 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 1442043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2364768000).

1442043240 is an abundant number, since it is smaller than the sum of its proper divisors (3287492760).

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

1442043240 is a wasteful number, since it uses less digits than its factorization.

1442043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1442043240 is about 37974.2444296131. The cubic root of 1442043240 is about 1129.7770829235. Note that the first 3 decimals are identical.

Adding to 1442043240 its reverse (423402441), we get a palindrome (1865445681).

The spelling of 1442043240 in words is "one billion, four hundred forty-two million, forty-three thousand, two hundred forty".