126212049 has 6 divisors (see below), whose sum is σ = 182306306. Its totient is φ = 84141360.

The previous prime is 126211997. The next prime is 126212071. The reversal of 126212049 is 940212621.

126212049 is a `hidden beast` number, since 12 + 621 + 20 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 57653649 = 8280^2 + 7593^2 .

It is not a de Polignac number, because 126212049 - 2⁹ = 126211537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126212549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7011772 + ... + 7011789.

Almost surely, 2^126212049 is an apocalyptic number.

It is an amenable number.

126212049 is a deficient number, since it is larger than the sum of its proper divisors (56094257).

126212049 is a wasteful number, since it uses less digits than its factorization.

126212049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023567 (or 14023564 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 126212049 is about 11234.4136028544. The cubic root of 126212049 is about 501.6108699559.

The spelling of 126212049 in words is "one hundred twenty-six million, two hundred twelve thousand, forty-nine".