142288540 has 12 divisors (see below), whose sum is σ = 298805976. Its totient is φ = 56915408.

The previous prime is 142288537. The next prime is 142288541. The reversal of 142288540 is 45882241.

142288540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×142288540³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142288496 and 142288505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142288541) 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, 3557194 + ... + 3557233.

It is an arithmetic number, because the mean of its divisors is an integer number (24900498).

Almost surely, 2^142288540 is an apocalyptic number.

142288540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142288540 is an abundant number, since it is smaller than the sum of its proper divisors (156517436).

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

142288540 is a wasteful number, since it uses less digits than its factorization.

142288540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114436 (or 7114434 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 142288540 is about 11928.4760133053. The cubic root of 142288540 is about 522.0634724616.

The spelling of 142288540 in words is "one hundred forty-two million, two hundred eighty-eight thousand, five hundred forty".