142303240 has 32 divisors (see below), whose sum is σ = 325436760. Its totient is φ = 55987200.

The previous prime is 142303223. The next prime is 142303247. The reversal of 142303240 is 42303241.

It can be written as a sum of positive squares in 4 ways, for example, as 28965924 + 113337316 = 5382^2 + 10646^2 .

It is a super-2 number, since 2×142303240² = 40500424228995200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142303247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26721 + ... + 31600.

Almost surely, 2^142303240 is an apocalyptic number.

142303240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142303240 is an abundant number, since it is smaller than the sum of its proper divisors (183133520).

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

142303240 is a wasteful number, since it uses less digits than its factorization.

142303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58393 (or 58389 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 142303240 is about 11929.0921699851. The cubic root of 142303240 is about 522.0814501774.

Adding to 142303240 its reverse (42303241), we get a palindrome (184606481).

Subtracting from 142303240 its reverse (42303241), we obtain a palindrome (99999999).

The spelling of 142303240 in words is "one hundred forty-two million, three hundred three thousand, two hundred forty".