145907 has 4 divisors (see below), whose sum is σ = 148440. Its totient is φ = 143376.

The previous prime is 145903. The next prime is 145931. The reversal of 145907 is 709541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709541 = 7 ⋅101363.

It is a cyclic number.

It is not a de Polignac number, because 145907 - 2² = 145903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (37110).

2¹⁴⁵⁹⁰⁷ is an apocalyptic number.

145907 is a deficient number, since it is larger than the sum of its proper divisors (2533).

145907 is an equidigital number, since it uses as much as digits as its factorization.

145907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 145907 is about 381.9777480430. The cubic root of 145907 is about 52.6451914439.

The spelling of 145907 in words is "one hundred forty-five thousand, nine hundred seven".