149442985 has 8 divisors (see below), whose sum is σ = 182271816. Its totient is φ = 117594240.

The previous prime is 149442959. The next prime is 149442989. The reversal of 149442985 is 589244941.

It can be written as a sum of positive squares in 4 ways, for example, as 700569 + 148742416 = 837^2 + 12196^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149442985 - 2⁹ = 149442473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149442989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244684 + ... + 245293.

It is an arithmetic number, because the mean of its divisors is an integer number (22783977).

Almost surely, 2^149442985 is an apocalyptic number.

It is an amenable number.

149442985 is a deficient number, since it is larger than the sum of its proper divisors (32828831).

149442985 is an equidigital number, since it uses as much as digits as its factorization.

149442985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490043.

The product of its digits is 414720, while the sum is 46.

The square root of 149442985 is about 12224.6875215688. The cubic root of 149442985 is about 530.6707835254.

The spelling of 149442985 in words is "one hundred forty-nine million, four hundred forty-two thousand, nine hundred eighty-five".