149170140 has 384 divisors, whose sum is σ = 584908800. Its totient is φ = 30792960.

The previous prime is 149170129. The next prime is 149170163. The reversal of 149170140 is 41071941.

149170140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2226387 + ... + 2226453.

It is an arithmetic number, because the mean of its divisors is an integer number (1523200).

Almost surely, 2^149170140 is an apocalyptic number.

149170140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149170140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292454400).

149170140 is an abundant number, since it is smaller than the sum of its proper divisors (435738660).

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

149170140 is a wasteful number, since it uses less digits than its factorization.

149170140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 149170140 is about 12213.5228333188. The cubic root of 149170140 is about 530.3476300129.

It can be divided in two parts, 1491 and 70140, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 149170140 in words is "one hundred forty-nine million, one hundred seventy thousand, one hundred forty".