142540441421 has 16 divisors (see below), whose sum is σ = 165384529920. Its totient is φ = 120320536560.

The previous prime is 142540441409. The next prime is 142540441427. The reversal of 142540441421 is 124144045241.

It is a de Polignac number, because none of the positive numbers 2^k-142540441421 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 (142540441427) 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, 279170 + ... + 602508.

It is an arithmetic number, because the mean of its divisors is an integer number (10336533120).

Almost surely, 2^142540441421 is an apocalyptic number.

It is an amenable number.

142540441421 is a deficient number, since it is larger than the sum of its proper divisors (22844088499).

142540441421 is an equidigital number, since it uses as much as digits as its factorization.

142540441421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324304.

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 142540441421 its reverse (124144045241), we get a palindrome (266684486662).

The spelling of 142540441421 in words is "one hundred forty-two billion, five hundred forty million, four hundred forty-one thousand, four hundred twenty-one".