145450242 has 80 divisors (see below), whose sum is σ = 380540160. Its totient is φ = 40658112.

The previous prime is 145450241. The next prime is 145450271. The reversal of 145450242 is 242054541.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145450241) 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 39 ways as a sum of consecutive naturals, for example, 51934 + ... + 54662.

It is an arithmetic number, because the mean of its divisors is an integer number (4756752).

Almost surely, 2^145450242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145450242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190270080).

145450242 is an abundant number, since it is smaller than the sum of its proper divisors (235089918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145450242 is a wasteful number, since it uses less digits than its factorization.

145450242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2788 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 145450242 is about 12060.2753699905. The cubic root of 145450242 is about 525.9019922743.

The spelling of 145450242 in words is "one hundred forty-five million, four hundred fifty thousand, two hundred forty-two".