147354721 has 4 divisors (see below), whose sum is σ = 153761472. Its totient is φ = 140947972.

The previous prime is 147354707. The next prime is 147354731. The reversal of 147354721 is 127453741.

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 147354721 - 2¹⁷ = 147223649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147354731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3203341 + ... + 3203386.

It is an arithmetic number, because the mean of its divisors is an integer number (38440368).

Almost surely, 2^147354721 is an apocalyptic number.

It is an amenable number.

147354721 is a deficient number, since it is larger than the sum of its proper divisors (6406751).

147354721 is an equidigital number, since it uses as much as digits as its factorization.

147354721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406750.

The product of its digits is 23520, while the sum is 34.

The square root of 147354721 is about 12138.9752862422. The cubic root of 147354721 is about 528.1873772990.

The spelling of 147354721 in words is "one hundred forty-seven million, three hundred fifty-four thousand, seven hundred twenty-one".