145441242 has 12 divisors (see below), whose sum is σ = 315122730. Its totient is φ = 48480408.

The previous prime is 145441229. The next prime is 145441249. The reversal of 145441242 is 242144541.

It can be written as a sum of positive squares in only one way, i.e., 133888041 + 11553201 = 11571^2 + 3399^2 .

It is not an unprimeable number, because it can be changed into a prime (145441249) 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 5 ways as a sum of consecutive naturals, for example, 4040017 + ... + 4040052.

Almost surely, 2^145441242 is an apocalyptic number.

145441242 is an abundant number, since it is smaller than the sum of its proper divisors (169681488).

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

145441242 is a wasteful number, since it uses less digits than its factorization.

145441242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080077 (or 8080074 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 145441242 is about 12059.9022384097. The cubic root of 145441242 is about 525.8911450010.

Adding to 145441242 its reverse (242144541), we get a palindrome (387585783).

The spelling of 145441242 in words is "one hundred forty-five million, four hundred forty-one thousand, two hundred forty-two".