142253240 has 16 divisors (see below), whose sum is σ = 320069880. Its totient is φ = 56901280.

The previous prime is 142253233. The next prime is 142253249. The reversal of 142253240 is 42352241.

It is a happy number.

142253240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142253249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778126 + ... + 1778205.

Almost surely, 2^142253240 is an apocalyptic number.

142253240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142253240 is an abundant number, since it is smaller than the sum of its proper divisors (177816640).

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

142253240 is a wasteful number, since it uses less digits than its factorization.

142253240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556342 (or 3556338 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142253240 is about 11926.9962689690. The cubic root of 142253240 is about 522.0202964271.

Subtracting from 142253240 its reverse (42352241), we obtain a palindrome (99900999).

The spelling of 142253240 in words is "one hundred forty-two million, two hundred fifty-three thousand, two hundred forty".