10402123444123 has 32 divisors (see below), whose sum is σ = 11091700552320. Its totient is φ = 9734958858240.

The previous prime is 10402123444043. The next prime is 10402123444277. The reversal of 10402123444123 is 32144432120401.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10402123444123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402123444523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141756963 + ... + 141830323.

It is an arithmetic number, because the mean of its divisors is an integer number (346615642260).

Almost surely, 2^{10402123444123} is an apocalyptic number.

10402123444123 is a deficient number, since it is larger than the sum of its proper divisors (689577108197).

10402123444123 is a wasteful number, since it uses less digits than its factorization.

10402123444123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74199.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 10402123444123 its reverse (32144432120401), we get a palindrome (42546555564524).

The spelling of 10402123444123 in words is "ten trillion, four hundred two billion, one hundred twenty-three million, four hundred forty-four thousand, one hundred twenty-three".