8142672427 has 4 divisors (see below), whose sum is σ = 8621653176. Its totient is φ = 7663691680.

The previous prime is 8142672409. The next prime is 8142672449. The reversal of 8142672427 is 7242762418.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8142672427 is a prime.

It is a super-3 number, since 3×8142672427³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8142672407) 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, 239490349 + ... + 239490382.

It is an arithmetic number, because the mean of its divisors is an integer number (2155413294).

Almost surely, 2^8142672427 is an apocalyptic number.

8142672427 is a deficient number, since it is larger than the sum of its proper divisors (478980749).

8142672427 is a wasteful number, since it uses less digits than its factorization.

8142672427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478980748.

The product of its digits is 301056, while the sum is 43.

The square root of 8142672427 is about 90236.7576268119. The cubic root of 8142672427 is about 2011.8193824211.

The spelling of 8142672427 in words is "eight billion, one hundred forty-two million, six hundred seventy-two thousand, four hundred twenty-seven".