126420131 has 2 divisors, whose sum is σ = 126420132. Its totient is φ = 126420130.

The previous prime is 126420127. The next prime is 126420181. The reversal of 126420131 is 131024621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126420131 - 2² = 126420127 is a prime.

It is a super-2 number, since 2×126420131² = 31964099044114322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126420101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63210065 + 63210066.

It is an arithmetic number, because the mean of its divisors is an integer number (63210066).

Almost surely, 2^126420131 is an apocalyptic number.

126420131 is a deficient number, since it is larger than the sum of its proper divisors (1).

126420131 is an equidigital number, since it uses as much as digits as its factorization.

126420131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 126420131 is about 11243.6707084475. The cubic root of 126420131 is about 501.8863821745.

Adding to 126420131 its reverse (131024621), we get a palindrome (257444752).

The spelling of 126420131 in words is "one hundred twenty-six million, four hundred twenty thousand, one hundred thirty-one".