142525450543621 has 4 divisors (see below), whose sum is σ = 142745737175712. Its totient is φ = 142305163911532.

The previous prime is 142525450543579. The next prime is 142525450543649. The reversal of 142525450543621 is 126345054525241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142525450543621 - 2³⁹ = 141975694729733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142525450543321) 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, 110143315075 + ... + 110143316368.

It is an arithmetic number, because the mean of its divisors is an integer number (35686434293928).

Almost surely, 2^{142525450543621} is an apocalyptic number.

It is an amenable number.

142525450543621 is a deficient number, since it is larger than the sum of its proper divisors (220286632091).

142525450543621 is an equidigital number, since it uses as much as digits as its factorization.

142525450543621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220286632090.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 142525450543621 in words is "one hundred forty-two trillion, five hundred twenty-five billion, four hundred fifty million, five hundred forty-three thousand, six hundred twenty-one".