142531441 has 8 divisors (see below), whose sum is σ = 156012584. Its totient is φ = 129409920.

The previous prime is 142531421. The next prime is 142531471. The reversal of 142531441 is 144135241.

It can be written as a sum of positive squares in 4 ways, for example, as 230400 + 142301041 = 480^2 + 11929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142531441 - 2⁵ = 142531409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142531421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89076 + ... + 90661.

It is an arithmetic number, because the mean of its divisors is an integer number (19501573).

Almost surely, 2^142531441 is an apocalyptic number.

It is an amenable number.

142531441 is a deficient number, since it is larger than the sum of its proper divisors (13481143).

142531441 is a wasteful number, since it uses less digits than its factorization.

142531441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179811.

The product of its digits is 1920, while the sum is 25.

The square root of 142531441 is about 11938.6532322536. The cubic root of 142531441 is about 522.3603753812.

Adding to 142531441 its reverse (144135241), we get a palindrome (286666682).

The spelling of 142531441 in words is "one hundred forty-two million, five hundred thirty-one thousand, four hundred forty-one".