2125442043102 has 64 divisors (see below), whose sum is σ = 4944073987584. Its totient is φ = 596554381440.

The previous prime is 2125442042987. The next prime is 2125442043217. The reversal of 2125442043102 is 2013402445212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2125442042987) and next prime (2125442043217).

It is a self number, because there is not a number n which added to its sum of digits gives 2125442043102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1489228 + ... + 2543360.

It is an arithmetic number, because the mean of its divisors is an integer number (77251156056).

Almost surely, 2^{2125442043102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125442043102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2472036993792).

2125442043102 is an abundant number, since it is smaller than the sum of its proper divisors (2818631944482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2125442043102 is a wasteful number, since it uses less digits than its factorization.

2125442043102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054993.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 2125442043102 its reverse (2013402445212), we get a palindrome (4138844488314).

The spelling of 2125442043102 in words is "two trillion, one hundred twenty-five billion, four hundred forty-two million, forty-three thousand, one hundred two".