159117420 has 288 divisors, whose sum is σ = 583446528. Its totient is φ = 31680000.

The previous prime is 159117407. The next prime is 159117449. The reversal of 159117420 is 24711951.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1575370 + ... + 1575470.

It is an arithmetic number, because the mean of its divisors is an integer number (2025856).

Almost surely, 2^159117420 is an apocalyptic number.

159117420 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 159117420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291723264).

159117420 is an abundant number, since it is smaller than the sum of its proper divisors (424329108).

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

159117420 is a wasteful number, since it uses less digits than its factorization.

159117420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 159117420 is about 12614.1753594914. The cubic root of 159117420 is about 541.8834778084.

The spelling of 159117420 in words is "one hundred fifty-nine million, one hundred seventeen thousand, four hundred twenty".