149985420 has 96 divisors (see below), whose sum is σ = 464576448. Its totient is φ = 35914752.

The previous prime is 149985403. The next prime is 149985467. The reversal of 149985420 is 24589941.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26262 + ... + 31458.

It is an arithmetic number, because the mean of its divisors is an integer number (4839338).

Almost surely, 2^149985420 is an apocalyptic number.

149985420 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 149985420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232288224).

149985420 is an abundant number, since it is smaller than the sum of its proper divisors (314591028).

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

149985420 is a wasteful number, since it uses less digits than its factorization.

149985420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259 (or 5257 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 149985420 is about 12246.8534734437. The cubic root of 149985420 is about 531.3120689647.

The spelling of 149985420 in words is "one hundred forty-nine million, nine hundred eighty-five thousand, four hundred twenty".