2102040 has 48 divisors (see below), whose sum is σ = 6832800. Its totient is φ = 560448.

The previous prime is 2102021. The next prime is 2102057. The reversal of 2102040 is 402012.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2560 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (142350).

2^2102040 is an apocalyptic number.

2102040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102040 is an abundant number, since it is smaller than the sum of its proper divisors (4730760).

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

2102040 is a wasteful number, since it uses less digits than its factorization.

2102040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2102040 is about 1449.8413706334. The cubic root of 2102040 is about 128.0993694517.

Adding to 2102040 its reverse (402012), we get a palindrome (2504052).

The spelling of 2102040 in words is "two million, one hundred two thousand, forty".