126405127 has 2 divisors, whose sum is σ = 126405128. Its totient is φ = 126405126.

The previous prime is 126405107. The next prime is 126405133. The reversal of 126405127 is 721504621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126405127 is a prime.

It is a super-2 number, since 2×126405127² = 31956512263772258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126405095 and 126405104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126405107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63202563 + 63202564.

It is an arithmetic number, because the mean of its divisors is an integer number (63202564).

Almost surely, 2^126405127 is an apocalyptic number.

126405127 is a deficient number, since it is larger than the sum of its proper divisors (1).

126405127 is an equidigital number, since it uses as much as digits as its factorization.

126405127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 126405127 is about 11243.0034688245. The cubic root of 126405127 is about 501.8665261564.

Adding to 126405127 its reverse (721504621), we get a palindrome (847909748).

The spelling of 126405127 in words is "one hundred twenty-six million, four hundred five thousand, one hundred twenty-seven".