142288541 has 2 divisors, whose sum is σ = 142288542. Its totient is φ = 142288540.

The previous prime is 142288537. The next prime is 142288547. The reversal of 142288541 is 145882241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136305625 + 5982916 = 11675^2 + 2446^2 .

It is an emirp because it is prime and its reverse (145882241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142288541 - 2² = 142288537 is a prime.

It is a super-3 number, since 3×142288541³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142288547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71144270 + 71144271.

It is an arithmetic number, because the mean of its divisors is an integer number (71144271).

Almost surely, 2^142288541 is an apocalyptic number.

It is an amenable number.

142288541 is a deficient number, since it is larger than the sum of its proper divisors (1).

142288541 is an equidigital number, since it uses as much as digits as its factorization.

142288541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20480, while the sum is 35.

The square root of 142288541 is about 11928.4760552218. The cubic root of 142288541 is about 522.0634736847.

The spelling of 142288541 in words is "one hundred forty-two million, two hundred eighty-eight thousand, five hundred forty-one".