148340921 has 12 divisors (see below), whose sum is σ = 154383696. Its totient is φ = 142524360.

The previous prime is 148340917. The next prime is 148340947. The reversal of 148340921 is 129043841.

It is a happy number.

It is not a de Polignac number, because 148340921 - 2² = 148340917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (148340971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156170 + ... + 157116.

It is an arithmetic number, because the mean of its divisors is an integer number (12865308).

Almost surely, 2^148340921 is an apocalyptic number.

It is an amenable number.

148340921 is a deficient number, since it is larger than the sum of its proper divisors (6042775).

148340921 is an equidigital number, since it uses as much as digits as its factorization.

148340921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 148340921 is about 12179.5287675673. The cubic root of 148340921 is about 529.3630903865.

The spelling of 148340921 in words is "one hundred forty-eight million, three hundred forty thousand, nine hundred twenty-one".