42155654271 has 4 divisors (see below), whose sum is σ = 56207539032. Its totient is φ = 28103769512.

The previous prime is 42155654269. The next prime is 42155654287. The reversal of 42155654271 is 17245655124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42155654271 - 2¹ = 42155654269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42155654201) 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, 7025942376 + ... + 7025942381.

It is an arithmetic number, because the mean of its divisors is an integer number (14051884758).

Almost surely, 2^42155654271 is an apocalyptic number.

42155654271 is a deficient number, since it is larger than the sum of its proper divisors (14051884761).

42155654271 is a wasteful number, since it uses less digits than its factorization.

42155654271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14051884760.

The product of its digits is 336000, while the sum is 42.

The spelling of 42155654271 in words is "forty-two billion, one hundred fifty-five million, six hundred fifty-four thousand, two hundred seventy-one".