126249797 has 2 divisors, whose sum is σ = 126249798. Its totient is φ = 126249796.

The previous prime is 126249751. The next prime is 126249839. The reversal of 126249797 is 797942621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115971361 + 10278436 = 10769^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 126249797 - 2¹⁴ = 126233413 is a prime.

It is a super-2 number, since 2×126249797² = 31878022485082418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126249707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63124898 + 63124899.

It is an arithmetic number, because the mean of its divisors is an integer number (63124899).

Almost surely, 2^126249797 is an apocalyptic number.

It is an amenable number.

126249797 is a deficient number, since it is larger than the sum of its proper divisors (1).

126249797 is an equidigital number, since it uses as much as digits as its factorization.

126249797 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 126249797 is about 11236.0934937370. The cubic root of 126249797 is about 501.6608728938.

The spelling of 126249797 in words is "one hundred twenty-six million, two hundred forty-nine thousand, seven hundred ninety-seven".