42707115649 has 9 divisors (see below), whose sum is σ = 46945030881. Its totient is φ = 38822584020.

The previous prime is 42707115643. The next prime is 42707115677. The reversal of 42707115649 is 94651170724.

The square root of 42707115649 is 206657.

It is a perfect power (a square), and thus also a powerful number.

42707115649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42707115649 - 2⁵ = 42707115617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42707115599 and 42707115608.

It is not an unprimeable number, because it can be changed into a prime (42707115643) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2263834 + ... + 2282620.

Almost surely, 2^42707115649 is an apocalyptic number.

42707115649 is the 206657-th square number.

42707115649 is the 103329-th centered octagonal number.

It is an amenable number.

42707115649 is a deficient number, since it is larger than the sum of its proper divisors (4237915232).

42707115649 is an frugal number, since it uses more digits than its factorization.

42707115649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37596 (or 18798 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 42707115649 in words is "forty-two billion, seven hundred seven million, one hundred fifteen thousand, six hundred forty-nine".