149381240 has 16 divisors (see below), whose sum is σ = 336107880. Its totient is φ = 59752480.

The previous prime is 149381237. The next prime is 149381279. The reversal of 149381240 is 42183941.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 149381197 and 149381206.

It is a congruent number.

It is an unprimeable number.

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, 1867226 + ... + 1867305.

Almost surely, 2^149381240 is an apocalyptic number.

149381240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149381240 is an abundant number, since it is smaller than the sum of its proper divisors (186726640).

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

149381240 is a wasteful number, since it uses less digits than its factorization.

149381240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734542 (or 3734538 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 149381240 is about 12222.1618382347. The cubic root of 149381240 is about 530.5976881322.

The spelling of 149381240 in words is "one hundred forty-nine million, three hundred eighty-one thousand, two hundred forty".