2127420 has 72 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 554112.

The previous prime is 2127409. The next prime is 2127421. The reversal of 2127420 is 247212.

2127420 = T₁₄₅ + T₁₄₆ + ... + T₂₅₀.

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

It is a junction number, because it is equal to n+sod(n) for n = 2127393 and 2127402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9429 + ... + 9651.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2^2127420 is an apocalyptic number.

2127420 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 2127420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3302208).

2127420 is an abundant number, since it is smaller than the sum of its proper divisors (4476996).

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

2127420 is a wasteful number, since it uses less digits than its factorization.

2127420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2127420 is about 1458.5677906769. The cubic root of 2127420 is about 128.6128649512.

The spelling of 2127420 in words is "two million, one hundred twenty-seven thousand, four hundred twenty".