149669140 has 12 divisors (see below), whose sum is σ = 314305236. Its totient is φ = 59867648.

The previous prime is 149669077. The next prime is 149669141. The reversal of 149669140 is 41966941.

It can be written as a sum of positive squares in 2 ways, for example, as 17740944 + 131928196 = 4212^2 + 11486^2 .

It is a junction number, because it is equal to n+sod(n) for n = 149669093 and 149669102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149669141) 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, 3741709 + ... + 3741748.

It is an arithmetic number, because the mean of its divisors is an integer number (26192103).

Almost surely, 2^149669140 is an apocalyptic number.

149669140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149669140 is an abundant number, since it is smaller than the sum of its proper divisors (164636096).

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

149669140 is a wasteful number, since it uses less digits than its factorization.

149669140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483466 (or 7483464 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 149669140 is about 12233.9339543746. The cubic root of 149669140 is about 530.9383401058.

The spelling of 149669140 in words is "one hundred forty-nine million, six hundred sixty-nine thousand, one hundred forty".