147441721 has 8 divisors (see below), whose sum is σ = 169248960. Its totient is φ = 125820528.

The previous prime is 147441709. The next prime is 147441733. The reversal of 147441721 is 127144741.

It is an interprime number because it is at equal distance from previous prime (147441709) and next prime (147441733).

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

It is a cyclic number.

It is not a de Polignac number, because 147441721 - 2⁵ = 147441689 is a prime.

It is a super-2 number, since 2×147441721² = 43478122182883682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147441751) 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, 44806 + ... + 47983.

It is an arithmetic number, because the mean of its divisors is an integer number (21156120).

Almost surely, 2^147441721 is an apocalyptic number.

It is an amenable number.

147441721 is a deficient number, since it is larger than the sum of its proper divisors (21807239).

147441721 is an equidigital number, since it uses as much as digits as its factorization.

147441721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93023.

The product of its digits is 6272, while the sum is 31.

The square root of 147441721 is about 12142.5582559854. The cubic root of 147441721 is about 528.2913062420.

The spelling of 147441721 in words is "one hundred forty-seven million, four hundred forty-one thousand, seven hundred twenty-one".