2103138 has 64 divisors (see below), whose sum is σ = 5184000. Its totient is φ = 628992.

The previous prime is 2103119. The next prime is 2103139. The reversal of 2103138 is 8313012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2103138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26583 + ... + 26661.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2^2103138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592000).

2103138 is an abundant number, since it is smaller than the sum of its proper divisors (3080862).

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

2103138 is a wasteful number, since it uses less digits than its factorization.

2103138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2103138 is about 1450.2199833129. The cubic root of 2103138 is about 128.1216697925.

The spelling of 2103138 in words is "two million, one hundred three thousand, one hundred thirty-eight".