149850021 has 8 divisors (see below), whose sum is σ = 200431584. Its totient is φ = 99584240.

The previous prime is 149850013. The next prime is 149850023. The reversal of 149850021 is 120058941.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 149850021 - 2³ = 149850013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149850023) 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, 77835 + ... + 79736.

It is an arithmetic number, because the mean of its divisors is an integer number (25053948).

Almost surely, 2^149850021 is an apocalyptic number.

It is an amenable number.

149850021 is a deficient number, since it is larger than the sum of its proper divisors (50581563).

149850021 is a wasteful number, since it uses less digits than its factorization.

149850021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157891.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 149850021 is about 12241.3243156123. The cubic root of 149850021 is about 531.1521405723.

The spelling of 149850021 in words is "one hundred forty-nine million, eight hundred fifty thousand, twenty-one".