158242812 has 144 divisors (see below), whose sum is σ = 466324992. Its totient is φ = 40884480.

The previous prime is 158242787. The next prime is 158242837. The reversal of 158242812 is 218242851.

It is an interprime number because it is at equal distance from previous prime (158242787) and next prime (158242837).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1007838 + ... + 1007994.

It is an arithmetic number, because the mean of its divisors is an integer number (3238368).

Almost surely, 2^158242812 is an apocalyptic number.

158242812 is a gapful number since it is divisible by the number (12) 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 158242812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233162496).

158242812 is an abundant number, since it is smaller than the sum of its proper divisors (308082180).

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

158242812 is a wasteful number, since it uses less digits than its factorization.

158242812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 253 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 158242812 is about 12579.4599248139. The cubic root of 158242812 is about 540.8888106119. Note that the first 4 decimals are identical.

The spelling of 158242812 in words is "one hundred fifty-eight million, two hundred forty-two thousand, eight hundred twelve".