146215207 has 4 divisors (see below), whose sum is σ = 147976920. Its totient is φ = 144453496.

The previous prime is 146215159. The next prime is 146215211. The reversal of 146215207 is 702512641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702512641 = 17 ⋅41324273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146215207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146215297) 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 3 ways as a sum of consecutive naturals, for example, 880732 + ... + 880897.

It is an arithmetic number, because the mean of its divisors is an integer number (36994230).

Almost surely, 2^146215207 is an apocalyptic number.

146215207 is a deficient number, since it is larger than the sum of its proper divisors (1761713).

146215207 is an equidigital number, since it uses as much as digits as its factorization.

146215207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761712.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 146215207 is about 12091.9480233749. The cubic root of 146215207 is about 526.8223377262.

Adding to 146215207 its reverse (702512641), we get a palindrome (848727848).

The spelling of 146215207 in words is "one hundred forty-six million, two hundred fifteen thousand, two hundred seven".