149685240 has 64 divisors (see below), whose sum is σ = 464551200. Its totient is φ = 38538752.

The previous prime is 149685229. The next prime is 149685247. The reversal of 149685240 is 42586941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149685247) 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 15 ways as a sum of consecutive naturals, for example, 18027 + ... + 24986.

Almost surely, 2^149685240 is an apocalyptic number.

149685240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149685240 is an abundant number, since it is smaller than the sum of its proper divisors (314865960).

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

149685240 is a wasteful number, since it uses less digits than its factorization.

149685240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43056 (or 43052 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 149685240 is about 12234.5919425210. The cubic root of 149685240 is about 530.9573772095.

It can be divided in two parts, 1496 and 85240, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 149685240 in words is "one hundred forty-nine million, six hundred eighty-five thousand, two hundred forty".