2420189 has 4 divisors (see below), whose sum is σ = 2479260. Its totient is φ = 2361120.

The previous prime is 2420179. The next prime is 2420213. The reversal of 2420189 is 9810242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 2199289 = 470^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420189 - 2¹² = 2416093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29474 + ... + 29555.

It is an arithmetic number, because the mean of its divisors is an integer number (619815).

2^2420189 is an apocalyptic number.

It is an amenable number.

2420189 is a deficient number, since it is larger than the sum of its proper divisors (59071).

2420189 is an equidigital number, since it uses as much as digits as its factorization.

2420189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59070.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2420189 is about 1555.6956643251. The cubic root of 2420189 is about 134.2609639332.

The spelling of 2420189 in words is "two million, four hundred twenty thousand, one hundred eighty-nine".