158421330 has 48 divisors (see below), whose sum is σ = 414460800. Its totient is φ = 41982624.

The previous prime is 158421323. The next prime is 158421371. The reversal of 158421330 is 33124851.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 158421294 and 158421303.

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, 9271 + ... + 20069.

It is an arithmetic number, because the mean of its divisors is an integer number (8634600).

Almost surely, 2^158421330 is an apocalyptic number.

158421330 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 158421330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207230400).

158421330 is an abundant number, since it is smaller than the sum of its proper divisors (256039470).

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

158421330 is a wasteful number, since it uses less digits than its factorization.

158421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975 (or 10972 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 158421330 is about 12586.5535393927. The cubic root of 158421330 is about 541.0921312771.

The spelling of 158421330 in words is "one hundred fifty-eight million, four hundred twenty-one thousand, three hundred thirty".