148012721 has 4 divisors (see below), whose sum is σ = 148117872. Its totient is φ = 147907572.

The previous prime is 148012699. The next prime is 148012771. The reversal of 148012721 is 127210841.

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 148012721 - 2²² = 143818417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148012771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50435 + ... + 53288.

It is an arithmetic number, because the mean of its divisors is an integer number (37029468).

Almost surely, 2^148012721 is an apocalyptic number.

It is an amenable number.

148012721 is a deficient number, since it is larger than the sum of its proper divisors (105151).

148012721 is a wasteful number, since it uses less digits than its factorization.

148012721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105150.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 148012721 is about 12166.0478792416. The cubic root of 148012721 is about 528.9724019369.

The spelling of 148012721 in words is "one hundred forty-eight million, twelve thousand, seven hundred twenty-one".