126449901 has 6 divisors (see below), whose sum is σ = 182649870. Its totient is φ = 84299928.

The previous prime is 126449887. The next prime is 126449903. The reversal of 126449901 is 109944621.

It is a happy number.

126449901 is a `hidden beast` number, since 1 + 2 + 644 + 9 + 9 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 126225225 + 224676 = 11235^2 + 474^2 .

It is not a de Polignac number, because 126449901 - 2¹³ = 126441709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126449903) 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, 7024986 + ... + 7025003.

It is an arithmetic number, because the mean of its divisors is an integer number (30441645).

Almost surely, 2^126449901 is an apocalyptic number.

It is an amenable number.

126449901 is a deficient number, since it is larger than the sum of its proper divisors (56199969).

126449901 is a wasteful number, since it uses less digits than its factorization.

126449901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14049995 (or 14049992 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 126449901 is about 11244.9944864371. The cubic root of 126449901 is about 501.9257745952.

The spelling of 126449901 in words is "one hundred twenty-six million, four hundred forty-nine thousand, nine hundred one".