126343381 has 2 divisors, whose sum is σ = 126343382. Its totient is φ = 126343380.

The previous prime is 126343339. The next prime is 126343387. The reversal of 126343381 is 183343621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126202756 + 140625 = 11234^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 126343381 - 2²¹ = 124246229 is a prime.

It is a super-2 number, since 2×126343381² = 31925299845022322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126343387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63171690 + 63171691.

It is an arithmetic number, because the mean of its divisors is an integer number (63171691).

Almost surely, 2^126343381 is an apocalyptic number.

It is an amenable number.

126343381 is a deficient number, since it is larger than the sum of its proper divisors (1).

126343381 is an equidigital number, since it uses as much as digits as its factorization.

126343381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 126343381 is about 11240.2571589799. The cubic root of 126343381 is about 501.7847960919.

It can be divided in two parts, 1263 and 43381, that added together give a palindrome (44644).

The spelling of 126343381 in words is "one hundred twenty-six million, three hundred forty-three thousand, three hundred eighty-one".