142542320 has 20 divisors (see below), whose sum is σ = 331411080. Its totient is φ = 57016896.

The previous prime is 142542319. The next prime is 142542329. The reversal of 142542320 is 23245241.

It is a happy number.

142542320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142542329) 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, 890810 + ... + 890969.

It is an arithmetic number, because the mean of its divisors is an integer number (16570554).

Almost surely, 2^142542320 is an apocalyptic number.

142542320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142542320 is an abundant number, since it is smaller than the sum of its proper divisors (188868760).

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

142542320 is a wasteful number, since it uses less digits than its factorization.

142542320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781792 (or 1781786 counting only the distinct ones).

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

The square root of 142542320 is about 11939.1088444657. The cubic root of 142542320 is about 522.3736651132.

Adding to 142542320 its reverse (23245241), we get a palindrome (165787561).

The spelling of 142542320 in words is "one hundred forty-two million, five hundred forty-two thousand, three hundred twenty".