158720130 has 48 divisors (see below), whose sum is σ = 416949624. Its totient is φ = 41886720.

The previous prime is 158720059. The next prime is 158720147. The reversal of 158720130 is 31027851.

It can be written as a sum of positive squares in 4 ways, for example, as 151954929 + 6765201 = 12327^2 + 2601^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 158720094 and 158720103.

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, 361 + ... + 17820.

Almost surely, 2^158720130 is an apocalyptic number.

158720130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158720130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208474812).

158720130 is an abundant number, since it is smaller than the sum of its proper divisors (258229494).

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

158720130 is a wasteful number, since it uses less digits than its factorization.

158720130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18291 (or 18288 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 158720130 is about 12598.4177577980. The cubic root of 158720130 is about 541.4321039889.

Adding to 158720130 its reverse (31027851), we get a palindrome (189747981).

The spelling of 158720130 in words is "one hundred fifty-eight million, seven hundred twenty thousand, one hundred thirty".