142041210121 has 4 divisors (see below), whose sum is σ = 142912628752. Its totient is φ = 141169791492.

The previous prime is 142041210053. The next prime is 142041210131. The reversal of 142041210121 is 121012140241.

It is a happy number.

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 142041210121 - 2²⁷ = 141906992393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142041210131) 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, 435709071 + ... + 435709396.

It is an arithmetic number, because the mean of its divisors is an integer number (35728157188).

Almost surely, 2^142041210121 is an apocalyptic number.

It is an amenable number.

142041210121 is a deficient number, since it is larger than the sum of its proper divisors (871418631).

142041210121 is an equidigital number, since it uses as much as digits as its factorization.

142041210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871418630.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 142041210121 its reverse (121012140241), we get a palindrome (263053350362).

The spelling of 142041210121 in words is "one hundred forty-two billion, forty-one million, two hundred ten thousand, one hundred twenty-one".