158242320 has 120 divisors (see below), whose sum is σ = 534049152. Its totient is φ = 41990400.

The previous prime is 158242313. The next prime is 158242339. The reversal of 158242320 is 23242851.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194715 + ... + 195525.

Almost surely, 2^158242320 is an apocalyptic number.

158242320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158242320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267024576).

158242320 is an abundant number, since it is smaller than the sum of its proper divisors (375806832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158242320 is a wasteful number, since it uses less digits than its factorization.

158242320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 158242320 is about 12579.4403691102. The cubic root of 158242320 is about 540.8882500439. Note that the first 3 decimals are identical.

The spelling of 158242320 in words is "one hundred fifty-eight million, two hundred forty-two thousand, three hundred twenty".