149428422 has 128 divisors (see below), whose sum is σ = 401425920. Its totient is φ = 40590720.

The previous prime is 149428381. The next prime is 149428423. The reversal of 149428422 is 224824941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149428423) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 285453 + ... + 285975.

It is an arithmetic number, because the mean of its divisors is an integer number (3136140).

Almost surely, 2^149428422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149428422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200712960).

149428422 is an abundant number, since it is smaller than the sum of its proper divisors (251997498).

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

149428422 is a wasteful number, since it uses less digits than its factorization.

149428422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 589 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 149428422 is about 12224.0918681103. The cubic root of 149428422 is about 530.6535452685.

The spelling of 149428422 in words is "one hundred forty-nine million, four hundred twenty-eight thousand, four hundred twenty-two".