127440253 has 2 divisors, whose sum is σ = 127440254. Its totient is φ = 127440252.

The previous prime is 127440241. The next prime is 127440281. The reversal of 127440253 is 352044721.

It is an a-pointer prime, because the next prime (127440281) can be obtained adding 127440253 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86825124 + 40615129 = 9318^2 + 6373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127440253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127440233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63720126 + 63720127.

It is an arithmetic number, because the mean of its divisors is an integer number (63720127).

Almost surely, 2^127440253 is an apocalyptic number.

It is an amenable number.

127440253 is a deficient number, since it is larger than the sum of its proper divisors (1).

127440253 is an equidigital number, since it uses as much as digits as its factorization.

127440253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 127440253 is about 11288.9438389957. The cubic root of 127440253 is about 503.2327246051.

Adding to 127440253 its reverse (352044721), we get a palindrome (479484974).

The spelling of 127440253 in words is "one hundred twenty-seven million, four hundred forty thousand, two hundred fifty-three".