2120290 has 8 divisors (see below), whose sum is σ = 3816540. Its totient is φ = 848112.

The previous prime is 2120269. The next prime is 2120297. The reversal of 2120290 is 920212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1929321 + 190969 = 1389^2 + 437^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 106005 + ... + 106024.

2^2120290 is an apocalyptic number.

2120290 is a deficient number, since it is larger than the sum of its proper divisors (1696250).

2120290 is a wasteful number, since it uses less digits than its factorization.

2120290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212036.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2120290 is about 1456.1215608595. The cubic root of 2120290 is about 128.4690231014.

The spelling of 2120290 in words is "two million, one hundred twenty thousand, two hundred ninety".