149871940 has 12 divisors (see below), whose sum is σ = 314731116. Its totient is φ = 59948768.

The previous prime is 149871929. The next prime is 149871947. The reversal of 149871940 is 49178941.

It can be written as a sum of positive squares in 2 ways, for example, as 38738176 + 111133764 = 6224^2 + 10542^2 .

It is not an unprimeable number, because it can be changed into a prime (149871947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3746779 + ... + 3746818.

It is an arithmetic number, because the mean of its divisors is an integer number (26227593).

Almost surely, 2^149871940 is an apocalyptic number.

149871940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149871940 is an abundant number, since it is smaller than the sum of its proper divisors (164859176).

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

149871940 is a wasteful number, since it uses less digits than its factorization.

149871940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493606 (or 7493604 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 149871940 is about 12242.2195699963. The cubic root of 149871940 is about 531.1780370344.

The spelling of 149871940 in words is "one hundred forty-nine million, eight hundred seventy-one thousand, nine hundred forty".