146448021 has 8 divisors (see below), whose sum is σ = 195324480. Its totient is φ = 97601792.

The previous prime is 146447929. The next prime is 146448031. The reversal of 146448021 is 120844641.

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 146448021 - 2⁷ = 146447893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146448021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146448031) 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, 8821 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (24415560).

Almost surely, 2^146448021 is an apocalyptic number.

It is an amenable number.

146448021 is a deficient number, since it is larger than the sum of its proper divisors (48876459).

146448021 is a wasteful number, since it uses less digits than its factorization.

146448021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 146448021 is about 12101.5710137155. The cubic root of 146448021 is about 527.1018038129.

The spelling of 146448021 in words is "one hundred forty-six million, four hundred forty-eight thousand, twenty-one".