149121966 has 64 divisors (see below), whose sum is σ = 358649856. Its totient is φ = 40435200.

The previous prime is 149121953. The next prime is 149121971. The reversal of 149121966 is 669121941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67926 + ... + 70086.

It is an arithmetic number, because the mean of its divisors is an integer number (5603904).

Almost surely, 2^149121966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149121966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179324928).

149121966 is an abundant number, since it is smaller than the sum of its proper divisors (209527890).

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

149121966 is a wasteful number, since it uses less digits than its factorization.

149121966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257.

The product of its digits is 23328, while the sum is 39.

The square root of 149121966 is about 12211.5505158027. The cubic root of 149121966 is about 530.2905325322.

The spelling of 149121966 in words is "one hundred forty-nine million, one hundred twenty-one thousand, nine hundred sixty-six".