146521906 has 8 divisors (see below), whose sum is σ = 220258944. Its totient is φ = 73102260.

The previous prime is 146521847. The next prime is 146521931. The reversal of 146521906 is 609125641.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78190 + ... + 80041.

It is an arithmetic number, because the mean of its divisors is an integer number (27532368).

Almost surely, 2^146521906 is an apocalyptic number.

146521906 is a deficient number, since it is larger than the sum of its proper divisors (73737038).

146521906 is a wasteful number, since it uses less digits than its factorization.

146521906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158696.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 146521906 is about 12104.6233316035. The cubic root of 146521906 is about 527.1904322307.

The spelling of 146521906 in words is "one hundred forty-six million, five hundred twenty-one thousand, nine hundred six".