149123520 has 336 divisors, whose sum is σ = 632399040. Its totient is φ = 31408128.

The previous prime is 149123483. The next prime is 149123531. The reversal of 149123520 is 25321941.

149123520 is a `hidden beast` number, since 14 + 9 + 123 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261796 + ... + 262364.

It is an arithmetic number, because the mean of its divisors is an integer number (1882140).

Almost surely, 2^149123520 is an apocalyptic number.

149123520 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 149123520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316199520).

149123520 is an abundant number, since it is smaller than the sum of its proper divisors (483275520).

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

149123520 is a wasteful number, since it uses less digits than its factorization.

149123520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 149123520 is about 12211.6141439205. The cubic root of 149123520 is about 530.2923745784.

The spelling of 149123520 in words is "one hundred forty-nine million, one hundred twenty-three thousand, five hundred twenty".