142403001240 has 128 divisors (see below), whose sum is σ = 435998453760. Its totient is φ = 37195252224.

The previous prime is 142403001163. The next prime is 142403001271. The reversal of 142403001240 is 42100304241.

It is a super-2 number, since 2×142403001240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 3842077 + ... + 3878963.

It is an arithmetic number, because the mean of its divisors is an integer number (3406237920).

Almost surely, 2^142403001240 is an apocalyptic number.

142403001240 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 142403001240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217999226880).

142403001240 is an abundant number, since it is smaller than the sum of its proper divisors (293595452520).

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

142403001240 is a wasteful number, since it uses less digits than its factorization.

142403001240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37561 (or 37557 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 142403001240 its reverse (42100304241), we get a palindrome (184503305481).

The spelling of 142403001240 in words is "one hundred forty-two billion, four hundred three million, one thousand, two hundred forty".