1440142000 has 160 divisors (see below), whose sum is σ = 3837307968. Its totient is φ = 522720000.

The previous prime is 1440141973. The next prime is 1440142007. The reversal of 1440142000 is 2410441.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1440142007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2661730 + ... + 2662270.

Almost surely, 2^1440142000 is an apocalyptic number.

1440142000 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 1440142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918653984).

1440142000 is an abundant number, since it is smaller than the sum of its proper divisors (2397165968).

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

1440142000 is an equidigital number, since it uses as much as digits as its factorization.

1440142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1440142000 is about 37949.2028901794. The cubic root of 1440142000 is about 1129.2803520806.

Adding to 1440142000 its reverse (2410441), we get a palindrome (1442552441).

The spelling of 1440142000 in words is "one billion, four hundred forty million, one hundred forty-two thousand".