2120291 has 8 divisors (see below), whose sum is σ = 2260224. Its totient is φ = 1982080.

The previous prime is 2120269. The next prime is 2120297. The reversal of 2120291 is 1920212.

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 2120291 - 2⁶ = 2120227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120297) 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, 2921 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (282528).

2^2120291 is an apocalyptic number.

2120291 is a deficient number, since it is larger than the sum of its proper divisors (139933).

2120291 is a wasteful number, since it uses less digits than its factorization.

2120291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2120291 is about 1456.1219042374. The cubic root of 2120291 is about 128.4690432981.

The spelling of 2120291 in words is "two million, one hundred twenty thousand, two hundred ninety-one".