146057721 has 8 divisors (see below), whose sum is σ = 197486784. Its totient is φ = 96000240.

The previous prime is 146057719. The next prime is 146057749. The reversal of 146057721 is 127750641.

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

It is not a de Polignac number, because 146057721 - 2¹ = 146057719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146057321) 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, 342646 + ... + 343071.

It is an arithmetic number, because the mean of its divisors is an integer number (24685848).

Almost surely, 2^146057721 is an apocalyptic number.

It is an amenable number.

146057721 is a deficient number, since it is larger than the sum of its proper divisors (51429063).

146057721 is an equidigital number, since it uses as much as digits as its factorization.

146057721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685791.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 146057721 is about 12085.4342495419. The cubic root of 146057721 is about 526.6331258795.

The spelling of 146057721 in words is "one hundred forty-six million, fifty-seven thousand, seven hundred twenty-one".