159121928 has 16 divisors (see below), whose sum is σ = 340975680. Its totient is φ = 68195088.

The previous prime is 159121913. The next prime is 159121951. The reversal of 159121928 is 829121951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 159121891 and 159121900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420676 + ... + 1420787.

It is an arithmetic number, because the mean of its divisors is an integer number (21310980).

Almost surely, 2^159121928 is an apocalyptic number.

It is an amenable number.

159121928 is an abundant number, since it is smaller than the sum of its proper divisors (181853752).

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

159121928 is a wasteful number, since it uses less digits than its factorization.

159121928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841476 (or 2841472 counting only the distinct ones).

The product of its digits is 12960, while the sum is 38.

The square root of 159121928 is about 12614.3540460858. The cubic root of 159121928 is about 541.8885951774. Note that the first 3 decimals are identical.

The spelling of 159121928 in words is "one hundred fifty-nine million, one hundred twenty-one thousand, nine hundred twenty-eight".