395142271 has 4 divisors (see below), whose sum is σ = 418385952. Its totient is φ = 371898592.

The previous prime is 395142263. The next prime is 395142283. The reversal of 395142271 is 172241593.

It is a happy number.

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 395142271 - 2³ = 395142263 is a prime.

It is a super-2 number, since 2×395142271² = 312274828662074882, which contains 22 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 (395142071) 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, 11621815 + ... + 11621848.

It is an arithmetic number, because the mean of its divisors is an integer number (104596488).

Almost surely, 2^395142271 is an apocalyptic number.

395142271 is a deficient number, since it is larger than the sum of its proper divisors (23243681).

395142271 is a wasteful number, since it uses less digits than its factorization.

395142271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23243680.

The product of its digits is 15120, while the sum is 34.

The square root of 395142271 is about 19878.1858075630. The cubic root of 395142271 is about 733.8114723188.

The spelling of 395142271 in words is "three hundred ninety-five million, one hundred forty-two thousand, two hundred seventy-one".