142134030341221 has 4 divisors (see below), whose sum is σ = 142182162423532. Its totient is φ = 142085898258912.

The previous prime is 142134030341201. The next prime is 142134030341227. The reversal of 142134030341221 is 122143030431241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134630189150625 + 7503841190596 = 11603025^2 + 2739314^2 .

It is a cyclic number.

It is not a de Polignac number, because 142134030341221 - 2⁴⁵ = 106949658252389 is a prime.

It is a super-4 number, since 4×142134030341221⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142134030341227) 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, 24066036726 + ... + 24066042631.

It is an arithmetic number, because the mean of its divisors is an integer number (35545540605883).

Almost surely, 2^{142134030341221} is an apocalyptic number.

It is an amenable number.

142134030341221 is a deficient number, since it is larger than the sum of its proper divisors (48132082311).

142134030341221 is an equidigital number, since it uses as much as digits as its factorization.

142134030341221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48132082310.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 142134030341221 its reverse (122143030431241), we get a palindrome (264277060772462).

The spelling of 142134030341221 in words is "one hundred forty-two trillion, one hundred thirty-four billion, thirty million, three hundred forty-one thousand, two hundred twenty-one".