159427640 has 32 divisors (see below), whose sum is σ = 359084880. Its totient is φ = 63704832.

The previous prime is 159427621. The next prime is 159427661. The reversal of 159427640 is 46724951.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 159427594 and 159427603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59612 + ... + 62228.

Almost surely, 2^159427640 is an apocalyptic number.

159427640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159427640 is an abundant number, since it is smaller than the sum of its proper divisors (199657240).

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

159427640 is a wasteful number, since it uses less digits than its factorization.

159427640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4147 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 159427640 is about 12626.4658554957. The cubic root of 159427640 is about 542.2354065170.

The spelling of 159427640 in words is "one hundred fifty-nine million, four hundred twenty-seven thousand, six hundred forty".