158242447 has 4 divisors (see below), whose sum is σ = 172628136. Its totient is φ = 143856760.

The previous prime is 158242439. The next prime is 158242453. The reversal of 158242447 is 744242851.

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 158242447 - 2³ = 158242439 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 (158242547) 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, 7192828 + ... + 7192849.

It is an arithmetic number, because the mean of its divisors is an integer number (43157034).

Almost surely, 2^158242447 is an apocalyptic number.

158242447 is a deficient number, since it is larger than the sum of its proper divisors (14385689).

158242447 is a wasteful number, since it uses less digits than its factorization.

158242447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385688.

The product of its digits is 71680, while the sum is 37.

The square root of 158242447 is about 12579.4454170285. The cubic root of 158242447 is about 540.8883947435. Note that the first 3 decimals are identical.

The spelling of 158242447 in words is "one hundred fifty-eight million, two hundred forty-two thousand, four hundred forty-seven".