2027421757 has 4 divisors (see below), whose sum is σ = 2037713436. Its totient is φ = 2017130080.

The previous prime is 2027421743. The next prime is 2027421787. The reversal of 2027421757 is 7571247202.

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 1518738841 + 508682916 = 38971^2 + 22554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2027421757 is a prime.

It is a super-2 number, since 2×2027421757² = 8220877961513934098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2027421707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5145544 + ... + 5145937.

It is an arithmetic number, because the mean of its divisors is an integer number (509428359).

Almost surely, 2^2027421757 is an apocalyptic number.

It is an amenable number.

2027421757 is a deficient number, since it is larger than the sum of its proper divisors (10291679).

2027421757 is a wasteful number, since it uses less digits than its factorization.

2027421757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10291678.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 2027421757 is about 45026.9003707784. The cubic root of 2027421757 is about 1265.6531399866.

Adding to 2027421757 its reverse (7571247202), we get a palindrome (9598668959).

The spelling of 2027421757 in words is "two billion, twenty-seven million, four hundred twenty-one thousand, seven hundred fifty-seven".