2120245 has 8 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 1641360.

The previous prime is 2120243. The next prime is 2120249. The reversal of 2120245 is 5420212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120245 - 2¹ = 2120243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6685 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (328320).

2^2120245 is an apocalyptic number.

It is an amenable number.

2120245 is a deficient number, since it is larger than the sum of its proper divisors (506315).

2120245 is a wasteful number, since it uses less digits than its factorization.

2120245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13715.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2120245 is about 1456.1061087709. The cubic root of 2120245 is about 128.4681142403.

Adding to 2120245 its reverse (5420212), we get a palindrome (7540457).

The spelling of 2120245 in words is "two million, one hundred twenty thousand, two hundred forty-five".