126724799 has 2 divisors, whose sum is σ = 126724800. Its totient is φ = 126724798.

The previous prime is 126724757. The next prime is 126724823. The reversal of 126724799 is 997427621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126724799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126024799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63362399 + 63362400.

It is an arithmetic number, because the mean of its divisors is an integer number (63362400).

Almost surely, 2^126724799 is an apocalyptic number.

126724799 is a deficient number, since it is larger than the sum of its proper divisors (1).

126724799 is an equidigital number, since it uses as much as digits as its factorization.

126724799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 126724799 is about 11257.2109778577. The cubic root of 126724799 is about 502.2892348120.

It can be divided in two parts, 12672 and 4799, that added together give a palindrome (17471).

The spelling of 126724799 in words is "one hundred twenty-six million, seven hundred twenty-four thousand, seven hundred ninety-nine".