215142671 has 8 divisors (see below), whose sum is σ = 217056000. Its totient is φ = 213234840.

The previous prime is 215142661. The next prime is 215142689. The reversal of 215142671 is 176241512.

215142671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215142671 - 2¹⁴ = 215126287 is a prime.

It is a super-3 number, since 3×215142671³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215142601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125780 + ... + 127478.

It is an arithmetic number, because the mean of its divisors is an integer number (27132000).

Almost surely, 2^215142671 is an apocalyptic number.

215142671 is a deficient number, since it is larger than the sum of its proper divisors (1913329).

215142671 is a wasteful number, since it uses less digits than its factorization.

215142671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its digits is 3360, while the sum is 29.

The square root of 215142671 is about 14667.7425325099. The cubic root of 215142671 is about 599.2051242712.

The spelling of 215142671 in words is "two hundred fifteen million, one hundred forty-two thousand, six hundred seventy-one".