10402142120129 has 4 divisors (see below), whose sum is σ = 10411711709184. Its totient is φ = 10392572531076.

The previous prime is 10402142120101. The next prime is 10402142120131. The reversal of 10402142120129 is 92102124120401.

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 10402142120129 - 2²⁴ = 10402125342913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402142125129) 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, 4784792897 + ... + 4784795070.

It is an arithmetic number, because the mean of its divisors is an integer number (2602927927296).

Almost surely, 2^{10402142120129} is an apocalyptic number.

It is an amenable number.

10402142120129 is a deficient number, since it is larger than the sum of its proper divisors (9569589055).

10402142120129 is an equidigital number, since it uses as much as digits as its factorization.

10402142120129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9569589054.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 10402142120129 in words is "ten trillion, four hundred two billion, one hundred forty-two million, one hundred twenty thousand, one hundred twenty-nine".