142127521 has 8 divisors (see below), whose sum is σ = 147913920. Its totient is φ = 136400208.

The previous prime is 142127509. The next prime is 142127527. The reversal of 142127521 is 125721241.

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 142127521 - 2¹⁵ = 142094753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142127527) 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, 9831 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (18489240).

Almost surely, 2^142127521 is an apocalyptic number.

It is an amenable number.

142127521 is a deficient number, since it is larger than the sum of its proper divisors (5786399).

142127521 is a wasteful number, since it uses less digits than its factorization.

142127521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29543.

The product of its digits is 1120, while the sum is 25.

The square root of 142127521 is about 11921.7247493809. The cubic root of 142127521 is about 521.8664693216.

Adding to 142127521 its reverse (125721241), we get a palindrome (267848762).

The spelling of 142127521 in words is "one hundred forty-two million, one hundred twenty-seven thousand, five hundred twenty-one".