2120907 has 8 divisors (see below), whose sum is σ = 2834640. Its totient is φ = 1410560.

The previous prime is 2120891. The next prime is 2120917. The reversal of 2120907 is 7090212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2120907 - 2⁴ = 2120891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120917) 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, 1819 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (354330).

2^2120907 is an apocalyptic number.

2120907 is a deficient number, since it is larger than the sum of its proper divisors (713733).

2120907 is an equidigital number, since it uses as much as digits as its factorization.

2120907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2120907 is about 1456.3334096284. Note that the first 3 decimals coincide. The cubic root of 2120907 is about 128.4814832994.

The spelling of 2120907 in words is "two million, one hundred twenty thousand, nine hundred seven".