142241040 has 120 divisors (see below), whose sum is σ = 505835928. Its totient is φ = 35696640.

The previous prime is 142241017. The next prime is 142241041. The reversal of 142241040 is 40142241.

It can be written as a sum of positive squares in 4 ways, for example, as 6471936 + 135769104 = 2544^2 + 11652^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142241041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6430 + ... + 18050.

Almost surely, 2^142241040 is an apocalyptic number.

142241040 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 142241040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252917964).

142241040 is an abundant number, since it is smaller than the sum of its proper divisors (363594888).

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

142241040 is a wasteful number, since it uses less digits than its factorization.

142241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11657 (or 11648 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 142241040 is about 11926.4848132214. The cubic root of 142241040 is about 522.0053727372.

Adding to 142241040 its reverse (40142241), we get a palindrome (182383281).

The spelling of 142241040 in words is "one hundred forty-two million, two hundred forty-one thousand, forty".