145907873 has 4 divisors (see below), whose sum is σ = 145940100. Its totient is φ = 145875648.

The previous prime is 145907863. The next prime is 145907891. The reversal of 145907873 is 378709541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18037009 + 127870864 = 4247^2 + 11308^2 .

It is a cyclic number.

It is not a de Polignac number, because 145907873 - 2¹² = 145903777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145907813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7940 + ... + 18837.

It is an arithmetic number, because the mean of its divisors is an integer number (36485025).

Almost surely, 2^145907873 is an apocalyptic number.

It is an amenable number.

145907873 is a deficient number, since it is larger than the sum of its proper divisors (32227).

145907873 is an equidigital number, since it uses as much as digits as its factorization.

145907873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32226.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 145907873 is about 12079.2331296320. The cubic root of 145907873 is about 526.4529644038.

The spelling of 145907873 in words is "one hundred forty-five million, nine hundred seven thousand, eight hundred seventy-three".