42747172027 has 64 divisors (see below), whose sum is σ = 53684757504. Its totient is φ = 33213542400.

The previous prime is 42747171979. The next prime is 42747172049. The reversal of 42747172027 is 72027174724.

It is a cyclic number.

It is not a de Polignac number, because 42747172027 - 2²³ = 42738783419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42747172927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72822828 + ... + 72823414.

It is an arithmetic number, because the mean of its divisors is an integer number (838824336).

Almost surely, 2^42747172027 is an apocalyptic number.

42747172027 is a deficient number, since it is larger than the sum of its proper divisors (10937585477).

42747172027 is a wasteful number, since it uses less digits than its factorization.

42747172027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 307328, while the sum is 43.

The spelling of 42747172027 in words is "forty-two billion, seven hundred forty-seven million, one hundred seventy-two thousand, twenty-seven".