2142140 has 96 divisors (see below), whose sum is σ = 6096384. Its totient is φ = 610560.

The previous prime is 2142121. The next prime is 2142149. The reversal of 2142140 is 412412.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142149) 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, 19967 + ... + 20073.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^2142140 is an apocalyptic number.

2142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3048192).

2142140 is an abundant number, since it is smaller than the sum of its proper divisors (3954244).

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

2142140 is a wasteful number, since it uses less digits than its factorization.

2142140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2142140 is about 1463.6051380068. The cubic root of 2142140 is about 128.9088152351.

Adding to 2142140 its reverse (412412), we get a palindrome (2554552).

The spelling of 2142140 in words is "two million, one hundred forty-two thousand, one hundred forty".