126745647 has 16 divisors (see below), whose sum is σ = 193804800. Its totient is φ = 72175392.

The previous prime is 126745643. The next prime is 126745651. The reversal of 126745647 is 746547621.

It is an interprime number because it is at equal distance from previous prime (126745643) and next prime (126745651).

It is not a de Polignac number, because 126745647 - 2² = 126745643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126745599 and 126745608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126745643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4147 + ... + 16452.

It is an arithmetic number, because the mean of its divisors is an integer number (12112800).

Almost surely, 2^126745647 is an apocalyptic number.

126745647 is a deficient number, since it is larger than the sum of its proper divisors (67059153).

126745647 is a wasteful number, since it uses less digits than its factorization.

126745647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902.

The product of its digits is 282240, while the sum is 42.

The square root of 126745647 is about 11258.1369240208. The cubic root of 126745647 is about 502.3167778340.

The spelling of 126745647 in words is "one hundred twenty-six million, seven hundred forty-five thousand, six hundred forty-seven".