2120049937 has 4 divisors (see below), whose sum is σ = 2154804916. Its totient is φ = 2085294960.

The previous prime is 2120049913. The next prime is 2120049947. The reversal of 2120049937 is 7399400212.

It is a Cunningham number, because it is equal to 46044²+1.

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 68956416 + 2051093521 = 8304^2 + 45289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120049937 is a prime.

It is a super-2 number, since 2×2120049937² = 8989223470747407938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120049896 and 2120049905.

It is not an unprimeable number, because it can be changed into a prime (2120049907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17377398 + ... + 17377519.

It is an arithmetic number, because the mean of its divisors is an integer number (538701229).

Almost surely, 2^2120049937 is an apocalyptic number.

It is an amenable number.

2120049937 is a deficient number, since it is larger than the sum of its proper divisors (34754979).

2120049937 is an equidigital number, since it uses as much as digits as its factorization.

2120049937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34754978.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 2120049937 is about 46044.0000108592. Note that the first 4 decimals coincide. The cubic root of 2120049937 is about 1284.6417442136.

The spelling of 2120049937 in words is "two billion, one hundred twenty million, forty-nine thousand, nine hundred thirty-seven".