142040204100121 has 2 divisors, whose sum is σ = 142040204100122. Its totient is φ = 142040204100120.

The previous prime is 142040204100107. The next prime is 142040204100203. The reversal of 142040204100121 is 121001402040241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101712166710025 + 40328037390096 = 10085245^2 + 6350436^2 .

It is a cyclic number.

It is not a de Polignac number, because 142040204100121 - 2²¹ = 142040202002969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142040204100092 and 142040204100101.

It is not a weakly prime, because it can be changed into another prime (142040204101121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71020102050060 + 71020102050061.

It is an arithmetic number, because the mean of its divisors is an integer number (71020102050061).

Almost surely, 2^{142040204100121} is an apocalyptic number.

It is an amenable number.

142040204100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

142040204100121 is an equidigital number, since it uses as much as digits as its factorization.

142040204100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 142040204100121 its reverse (121001402040241), we get a palindrome (263041606140362).

The spelling of 142040204100121 in words is "one hundred forty-two trillion, forty billion, two hundred four million, one hundred thousand, one hundred twenty-one".