149808642 has 8 divisors (see below), whose sum is σ = 299617296. Its totient is φ = 49936212.

The previous prime is 149808557. The next prime is 149808649. The reversal of 149808642 is 246808941.

It is a sphenic number, since it is the product of 3 distinct primes.

149808642 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 149808594 and 149808603.

It is not an unprimeable number, because it can be changed into a prime (149808649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12484048 + ... + 12484059.

It is an arithmetic number, because the mean of its divisors is an integer number (37452162).

Almost surely, 2^149808642 is an apocalyptic number.

149808642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

149808642 is a wasteful number, since it uses less digits than its factorization.

149808642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968112.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 149808642 is about 12239.6340631573. The cubic root of 149808642 is about 531.1032459784.

The spelling of 149808642 in words is "one hundred forty-nine million, eight hundred eight thousand, six hundred forty-two".