2120126377 has 4 divisors (see below), whose sum is σ = 2123552080. Its totient is φ = 2116700676.

The previous prime is 2120126341. The next prime is 2120126413. The reversal of 2120126377 is 7736210212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2120126341) and next prime (2120126413).

It is a cyclic number.

It is not a de Polignac number, because 2120126377 - 2²⁷ = 1985908649 is a prime.

It is a super-2 number, since 2×2120126377² = 8989871708902292258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120126317) 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, 1711923 + ... + 1713160.

It is an arithmetic number, because the mean of its divisors is an integer number (530888020).

Almost surely, 2^2120126377 is an apocalyptic number.

It is an amenable number.

2120126377 is a deficient number, since it is larger than the sum of its proper divisors (3425703).

2120126377 is an equidigital number, since it uses as much as digits as its factorization.

2120126377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425702.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2120126377 is about 46044.8300789567. The cubic root of 2120126377 is about 1284.6571836039.

Adding to 2120126377 its reverse (7736210212), we get a palindrome (9856336589).

The spelling of 2120126377 in words is "two billion, one hundred twenty million, one hundred twenty-six thousand, three hundred seventy-seven".