158133420 has 72 divisors (see below), whose sum is σ = 485110080. Its totient is φ = 41690880.

The previous prime is 158133407. The next prime is 158133457. The reversal of 158133420 is 24331851.

It is a happy number.

It is a congruent number.

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, 11085 + ... + 20955.

It is an arithmetic number, because the mean of its divisors is an integer number (6737640).

Almost surely, 2^158133420 is an apocalyptic number.

158133420 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 158133420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242555040).

158133420 is an abundant number, since it is smaller than the sum of its proper divisors (326976660).

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

158133420 is a wasteful number, since it uses less digits than its factorization.

158133420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975 (or 9970 counting only the distinct ones).

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

The square root of 158133420 is about 12575.1111327097. Note that the first 4 decimals coincide. The cubic root of 158133420 is about 540.7641445000.

The spelling of 158133420 in words is "one hundred fifty-eight million, one hundred thirty-three thousand, four hundred twenty".