149688121 has 8 divisors (see below), whose sum is σ = 165132000. Its totient is φ = 134550240.

The previous prime is 149688107. The next prime is 149688139. The reversal of 149688121 is 121886941.

149688121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 149688121 - 2⁹ = 149687609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149688101) 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, 75471 + ... + 77428.

It is an arithmetic number, because the mean of its divisors is an integer number (20641500).

Almost surely, 2^149688121 is an apocalyptic number.

149688121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149688121 is a deficient number, since it is larger than the sum of its proper divisors (15443879).

149688121 is a wasteful number, since it uses less digits than its factorization.

149688121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152999.

The product of its digits is 27648, while the sum is 40.

The square root of 149688121 is about 12234.7096818846. The cubic root of 149688121 is about 530.9607836428.

The spelling of 149688121 in words is "one hundred forty-nine million, six hundred eighty-eight thousand, one hundred twenty-one".