142235240 has 80 divisors (see below), whose sum is σ = 373597380. Its totient is φ = 48733440.

The previous prime is 142235239. The next prime is 142235263. The reversal of 142235240 is 42532241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140612164 + 1623076 = 11858^2 + 1274^2 .

It is a zygodrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 95300 + ... + 96780.

Almost surely, 2^142235240 is an apocalyptic number.

142235240 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 142235240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186798690).

142235240 is an abundant number, since it is smaller than the sum of its proper divisors (231362140).

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

142235240 is an equidigital number, since it uses as much as digits as its factorization.

142235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1495 counting only the distinct ones).

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

The square root of 142235240 is about 11926.2416544358. The cubic root of 142235240 is about 521.9982775690.

Adding to 142235240 its reverse (42532241), we get a palindrome (184767481).

The spelling of 142235240 in words is "one hundred forty-two million, two hundred thirty-five thousand, two hundred forty".