146220929 has 8 divisors (see below), whose sum is σ = 155352360. Its totient is φ = 137362176.

The previous prime is 146220923. The next prime is 146220937. The reversal of 146220929 is 929022641.

It can be written as a sum of positive squares in 4 ways, for example, as 64770304 + 81450625 = 8048^2 + 9025^2 .

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 146220929 - 2⁸ = 146220673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146220923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67064 + ... + 69209.

It is an arithmetic number, because the mean of its divisors is an integer number (19419045).

Almost surely, 2^146220929 is an apocalyptic number.

It is an amenable number.

146220929 is a deficient number, since it is larger than the sum of its proper divisors (9131431).

146220929 is a wasteful number, since it uses less digits than its factorization.

146220929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136339.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 146220929 is about 12092.1846247897. The cubic root of 146220929 is about 526.8292098753.

The spelling of 146220929 in words is "one hundred forty-six million, two hundred twenty thousand, nine hundred twenty-nine".