126427531 has 2 divisors, whose sum is σ = 126427532. Its totient is φ = 126427530.

The previous prime is 126427529. The next prime is 126427537. The reversal of 126427531 is 135724621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126427531 - 2¹ = 126427529 is a prime.

It is a super-2 number, since 2×126427531² = 31967841189511922, which contains 22 as substring.

Together with 126427529, 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 = 126427493 and 126427502.

It is not a weakly prime, because it can be changed into another prime (126427537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63213765 + 63213766.

It is an arithmetic number, because the mean of its divisors is an integer number (63213766).

Almost surely, 2^126427531 is an apocalyptic number.

126427531 is a deficient number, since it is larger than the sum of its proper divisors (1).

126427531 is an equidigital number, since it uses as much as digits as its factorization.

126427531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 126427531 is about 11243.9997776592. Note that the first 3 decimals coincide. The cubic root of 126427531 is about 501.8961746201.

The spelling of 126427531 in words is "one hundred twenty-six million, four hundred twenty-seven thousand, five hundred thirty-one".