148274921 has 4 divisors (see below), whose sum is σ = 148317312. Its totient is φ = 148232532.

The previous prime is 148274911. The next prime is 148274923. The reversal of 148274921 is 129472841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148274921 - 2⁶ = 148274857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148274923) 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 3 ways as a sum of consecutive naturals, for example, 15425 + ... + 23118.

It is an arithmetic number, because the mean of its divisors is an integer number (37079328).

Almost surely, 2^148274921 is an apocalyptic number.

It is an amenable number.

148274921 is a deficient number, since it is larger than the sum of its proper divisors (42391).

148274921 is an equidigital number, since it uses as much as digits as its factorization.

148274921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42390.

The product of its digits is 32256, while the sum is 38.

The square root of 148274921 is about 12176.8190016933. The cubic root of 148274921 is about 529.2845704777.

The spelling of 148274921 in words is "one hundred forty-eight million, two hundred seventy-four thousand, nine hundred twenty-one".