127003428257 has 4 divisors (see below), whose sum is σ = 129956996400. Its totient is φ = 124049860116.

The previous prime is 127003428217. The next prime is 127003428281. The reversal of 127003428257 is 752824300721.

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 a cyclic number.

It is not a de Polignac number, because 127003428257 - 2¹⁶ = 127003362721 is a prime.

It is a super-2 number, since 2×127003428257² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127003428217) 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, 1476784007 + ... + 1476784092.

It is an arithmetic number, because the mean of its divisors is an integer number (32489249100).

Almost surely, 2^127003428257 is an apocalyptic number.

It is an amenable number.

127003428257 is a deficient number, since it is larger than the sum of its proper divisors (2953568143).

127003428257 is an equidigital number, since it uses as much as digits as its factorization.

127003428257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953568142.

The product of its (nonzero) digits is 188160, while the sum is 41.

Adding to 127003428257 its reverse (752824300721), we get a palindrome (879827728978).

The spelling of 127003428257 in words is "one hundred twenty-seven billion, three million, four hundred twenty-eight thousand, two hundred fifty-seven".