142237420 has 48 divisors (see below), whose sum is σ = 338617440. Its totient is φ = 49752576.

The previous prime is 142237399. The next prime is 142237427. The reversal of 142237420 is 24732241.

It is a happy number.

142237420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142237427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9457 + ... + 19336.

It is an arithmetic number, because the mean of its divisors is an integer number (7054530).

Almost surely, 2^142237420 is an apocalyptic number.

142237420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142237420 is an abundant number, since it is smaller than the sum of its proper divisors (196380020).

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

142237420 is a wasteful number, since it uses less digits than its factorization.

142237420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28834 (or 28832 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 142237420 is about 11926.3330491815. Note that the first 3 decimals coincide. The cubic root of 142237420 is about 522.0009443962. Note that the first 3 decimals are identical.

Adding to 142237420 its reverse (24732241), we get a palindrome (166969661).

The spelling of 142237420 in words is "one hundred forty-two million, two hundred thirty-seven thousand, four hundred twenty".