146281907 has 4 divisors (see below), whose sum is σ = 149394336. Its totient is φ = 143169480.

The previous prime is 146281903. The next prime is 146281921. The reversal of 146281907 is 709182641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709182641 = 9931 ⋅71411.

It is a cyclic number.

It is not a de Polignac number, because 146281907 - 2² = 146281903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146281903) 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, 1556144 + ... + 1556237.

It is an arithmetic number, because the mean of its divisors is an integer number (37348584).

Almost surely, 2^146281907 is an apocalyptic number.

146281907 is a deficient number, since it is larger than the sum of its proper divisors (3112429).

146281907 is an equidigital number, since it uses as much as digits as its factorization.

146281907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112428.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 146281907 is about 12094.7057425966. The cubic root of 146281907 is about 526.9024336086.

The spelling of 146281907 in words is "one hundred forty-six million, two hundred eighty-one thousand, nine hundred seven".