149921107 has 16 divisors (see below), whose sum is σ = 180449280. Its totient is φ = 121774752.

The previous prime is 149921099. The next prime is 149921111. The reversal of 149921107 is 701129941.

It is a cyclic number.

It is not a de Polignac number, because 149921107 - 2³ = 149921099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149924107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13278 + ... + 21820.

It is an arithmetic number, because the mean of its divisors is an integer number (11278080).

Almost surely, 2^149921107 is an apocalyptic number.

149921107 is a deficient number, since it is larger than the sum of its proper divisors (30528173).

149921107 is a wasteful number, since it uses less digits than its factorization.

149921107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 149921107 is about 12244.2274970698. The cubic root of 149921107 is about 531.2361167860.

The spelling of 149921107 in words is "one hundred forty-nine million, nine hundred twenty-one thousand, one hundred seven".