1012405002123 has 8 divisors (see below), whose sum is σ = 1429277650128. Its totient is φ = 635234511104.

The previous prime is 1012405002107. The next prime is 1012405002137. The reversal of 1012405002123 is 3212005042101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012405002123 - 2⁴ = 1012405002107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012405002123.

It is not an unprimeable number, because it can be changed into a prime (1012405002023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9925539186 + ... + 9925539287.

It is an arithmetic number, because the mean of its divisors is an integer number (178659706266).

Almost surely, 2^{1012405002123} is an apocalyptic number.

1012405002123 is a deficient number, since it is larger than the sum of its proper divisors (416872648005).

1012405002123 is a wasteful number, since it uses less digits than its factorization.

1012405002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19851078493.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 1012405002123 in words is "one trillion, twelve billion, four hundred five million, two thousand, one hundred twenty-three".