142252240 has 160 divisors (see below), whose sum is σ = 392474880. Its totient is φ = 47443968.

The previous prime is 142252223. The next prime is 142252241. The reversal of 142252240 is 42252241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142252241) 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, 454324 + ... + 454636.

It is an arithmetic number, because the mean of its divisors is an integer number (2452968).

Almost surely, 2^142252240 is an apocalyptic number.

142252240 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 142252240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196237440).

142252240 is an abundant number, since it is smaller than the sum of its proper divisors (250222640).

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

142252240 is a wasteful number, since it uses less digits than its factorization.

142252240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 375 counting only the distinct ones).

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

The square root of 142252240 is about 11926.9543471919. The cubic root of 142252240 is about 522.0190732059.

Subtracting from 142252240 its reverse (42252241), we obtain a palindrome (99999999).

The spelling of 142252240 in words is "one hundred forty-two million, two hundred fifty-two thousand, two hundred forty".