126753644 has 12 divisors (see below), whose sum is σ = 231463344. Its totient is φ = 60621264.

The previous prime is 126753643. The next prime is 126753661. The reversal of 126753644 is 446357621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 126753598 and 126753607.

It is not an unprimeable number, because it can be changed into a prime (126753643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688787 + ... + 688970.

It is an arithmetic number, because the mean of its divisors is an integer number (19288612).

Almost surely, 2^126753644 is an apocalyptic number.

It is an amenable number.

126753644 is a deficient number, since it is larger than the sum of its proper divisors (104709700).

126753644 is a wasteful number, since it uses less digits than its factorization.

126753644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377784 (or 1377782 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 126753644 is about 11258.4920837562. The cubic root of 126753644 is about 502.3273421489.

The spelling of 126753644 in words is "one hundred twenty-six million, seven hundred fifty-three thousand, six hundred forty-four".