142288542 has 32 divisors (see below), whose sum is σ = 344943360. Its totient is φ = 43117560.

The previous prime is 142288541. The next prime is 142288547. The reversal of 142288542 is 245882241.

142288542 is a `hidden beast` number, since 14 + 22 + 88 + 542 = 666.

It is a super-3 number, since 3×142288542³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142288497 and 142288506.

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 15 ways as a sum of consecutive naturals, for example, 119178 + ... + 120365.

It is an arithmetic number, because the mean of its divisors is an integer number (10779480).

Almost surely, 2^142288542 is an apocalyptic number.

142288542 is an abundant number, since it is smaller than the sum of its proper divisors (202654818).

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

142288542 is a wasteful number, since it uses less digits than its factorization.

142288542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239565 (or 239559 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 142288542 is about 11928.4760971383. The cubic root of 142288542 is about 522.0634749077.

The spelling of 142288542 in words is "one hundred forty-two million, two hundred eighty-eight thousand, five hundred forty-two".