145238073 has 8 divisors (see below), whose sum is σ = 197304768. Its totient is φ = 94998384.

The previous prime is 145238059. The next prime is 145238081. The reversal of 145238073 is 370832541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145238073 - 2⁴ = 145238057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145238173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456565 + ... + 456882.

It is an arithmetic number, because the mean of its divisors is an integer number (24663096).

Almost surely, 2^145238073 is an apocalyptic number.

It is an amenable number.

145238073 is a deficient number, since it is larger than the sum of its proper divisors (52066695).

145238073 is an equidigital number, since it uses as much as digits as its factorization.

145238073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913503.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 145238073 is about 12051.4759676979. The cubic root of 145238073 is about 525.6461558764.

The spelling of 145238073 in words is "one hundred forty-five million, two hundred thirty-eight thousand, seventy-three".