1245421127 has 2 divisors, whose sum is σ = 1245421128. Its totient is φ = 1245421126.

The previous prime is 1245421123. The next prime is 1245421141. The reversal of 1245421127 is 7211245421.

It is a weak prime.

It is an emirp because it is prime and its reverse (7211245421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1245421127 - 2² = 1245421123 is a prime.

It is a super-4 number, since 4×1245421127⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1245421127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245421123) 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 as a sum of consecutive naturals, namely, 622710563 + 622710564.

It is an arithmetic number, because the mean of its divisors is an integer number (622710564).

Almost surely, 2^1245421127 is an apocalyptic number.

1245421127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245421127 is an equidigital number, since it uses as much as digits as its factorization.

1245421127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 1245421127 is about 35290.5246064719. The cubic root of 1245421127 is about 1075.9004179825.

Adding to 1245421127 its reverse (7211245421), we get a palindrome (8456666548).

The spelling of 1245421127 in words is "one billion, two hundred forty-five million, four hundred twenty-one thousand, one hundred twenty-seven".