142555540 has 24 divisors (see below), whose sum is σ = 316977192. Its totient is φ = 53667840.

The previous prime is 142555519. The next prime is 142555547. The reversal of 142555540 is 45555241.

142555540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34644996 + 107910544 = 5886^2 + 10388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142555547) 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, 209301 + ... + 209980.

It is an arithmetic number, because the mean of its divisors is an integer number (13207383).

Almost surely, 2^142555540 is an apocalyptic number.

142555540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142555540 is an abundant number, since it is smaller than the sum of its proper divisors (174421652).

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

142555540 is a wasteful number, since it uses less digits than its factorization.

142555540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419307 (or 419305 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 142555540 is about 11939.6624742913. The cubic root of 142555540 is about 522.3898136890.

It can be divided in two parts, 1425 and 55540, that added together give a palindrome (56965).

The spelling of 142555540 in words is "one hundred forty-two million, five hundred fifty-five thousand, five hundred forty".