158440271 has 8 divisors (see below), whose sum is σ = 173133264. Its totient is φ = 143795520.

The previous prime is 158440237. The next prime is 158440283. The reversal of 158440271 is 172044851.

It is a happy number.

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

It is not a de Polignac number, because 158440271 - 2⁶ = 158440207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158440201) 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, 5006 + ... + 18491.

It is an arithmetic number, because the mean of its divisors is an integer number (21641658).

Almost surely, 2^158440271 is an apocalyptic number.

158440271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158440271 is a deficient number, since it is larger than the sum of its proper divisors (14692993).

158440271 is a wasteful number, since it uses less digits than its factorization.

158440271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24121.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 158440271 is about 12587.3059468657. The cubic root of 158440271 is about 541.1136949088.

The spelling of 158440271 in words is "one hundred fifty-eight million, four hundred forty thousand, two hundred seventy-one".