142234540 has 48 divisors (see below), whose sum is σ = 349316352. Its totient is φ = 47630016.

The previous prime is 142234483. The next prime is 142234559. The reversal of 142234540 is 45432241.

It is a happy number.

142234540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5794 + ... + 17833.

It is an arithmetic number, because the mean of its divisors is an integer number (7277424).

Almost surely, 2^142234540 is an apocalyptic number.

142234540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142234540 is an abundant number, since it is smaller than the sum of its proper divisors (207081812).

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

142234540 is a wasteful number, since it uses less digits than its factorization.

142234540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23686 (or 23684 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 142234540 is about 11926.2123073506. The cubic root of 142234540 is about 521.9974212426.

Adding to 142234540 its reverse (45432241), we get a palindrome (187666781).

The spelling of 142234540 in words is "one hundred forty-two million, two hundred thirty-four thousand, five hundred forty".