127849451 has 2 divisors, whose sum is σ = 127849452. Its totient is φ = 127849450.

The previous prime is 127849441. The next prime is 127849453. The reversal of 127849451 is 154948721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127849451 - 2¹⁸ = 127587307 is a prime.

Together with 127849453, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 127849399 and 127849408.

It is not a weakly prime, because it can be changed into another prime (127849453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63924725 + 63924726.

It is an arithmetic number, because the mean of its divisors is an integer number (63924726).

Almost surely, 2^127849451 is an apocalyptic number.

127849451 is a deficient number, since it is larger than the sum of its proper divisors (1).

127849451 is an equidigital number, since it uses as much as digits as its factorization.

127849451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 127849451 is about 11307.0531527892. The cubic root of 127849451 is about 503.7707592625.

The spelling of 127849451 in words is "one hundred twenty-seven million, eight hundred forty-nine thousand, four hundred fifty-one".