126356449 has 2 divisors, whose sum is σ = 126356450. Its totient is φ = 126356448.

The previous prime is 126356429. The next prime is 126356473. The reversal of 126356449 is 944653621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 45805824 = 8975^2 + 6768^2 .

It is an emirp because it is prime and its reverse (944653621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126356449 - 2¹¹ = 126354401 is a prime.

It is equal to p_7182949 and since 126356449 and 7182949 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (126356429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63178224 + 63178225.

It is an arithmetic number, because the mean of its divisors is an integer number (63178225).

Almost surely, 2^126356449 is an apocalyptic number.

It is an amenable number.

126356449 is a deficient number, since it is larger than the sum of its proper divisors (1).

126356449 is an equidigital number, since it uses as much as digits as its factorization.

126356449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 126356449 is about 11240.8384473757. The cubic root of 126356449 is about 501.8020957652.

The spelling of 126356449 in words is "one hundred twenty-six million, three hundred fifty-six thousand, four hundred forty-nine".