126771949 has 2 divisors, whose sum is σ = 126771950. Its totient is φ = 126771948.

The previous prime is 126771937. The next prime is 126771961. The reversal of 126771949 is 949177621.

It is a balanced prime because it is at equal distance from previous prime (126771937) and next prime (126771961).

It can be written as a sum of positive squares in only one way, i.e., 87796900 + 38975049 = 9370^2 + 6243^2 .

It is a cyclic number.

It is not a de Polignac number, because 126771949 - 2¹⁵ = 126739181 is a prime.

It is a super-2 number, since 2×126771949² = 32142254106517202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126771899 and 126771908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126771979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63385974 + 63385975.

It is an arithmetic number, because the mean of its divisors is an integer number (63385975).

Almost surely, 2^126771949 is an apocalyptic number.

It is an amenable number.

126771949 is a deficient number, since it is larger than the sum of its proper divisors (1).

126771949 is an equidigital number, since it uses as much as digits as its factorization.

126771949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 126771949 is about 11259.3049963130. The cubic root of 126771949 is about 502.3515220176.

The spelling of 126771949 in words is "one hundred twenty-six million, seven hundred seventy-one thousand, nine hundred forty-nine".