126428431 has 2 divisors, whose sum is σ = 126428432. Its totient is φ = 126428430.

The previous prime is 126428411. The next prime is 126428441. The reversal of 126428431 is 134824621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126428431 - 2¹⁷ = 126297359 is a prime.

It is a super-2 number, since 2×126428431² = 31968296330243522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126428393 and 126428402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126428411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63214215 + 63214216.

It is an arithmetic number, because the mean of its divisors is an integer number (63214216).

Almost surely, 2^126428431 is an apocalyptic number.

126428431 is a deficient number, since it is larger than the sum of its proper divisors (1).

126428431 is an equidigital number, since it uses as much as digits as its factorization.

126428431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 126428431 is about 11244.0397989335. The cubic root of 126428431 is about 501.8973655671.

The spelling of 126428431 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, four hundred thirty-one".