145542242 has 16 divisors (see below), whose sum is σ = 237729600. Its totient is φ = 66563280.

The previous prime is 145542233. The next prime is 145542263. The reversal of 145542242 is 242245541.

145542242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64934 + ... + 67137.

It is an arithmetic number, because the mean of its divisors is an integer number (14858100).

Almost surely, 2^145542242 is an apocalyptic number.

145542242 is a deficient number, since it is larger than the sum of its proper divisors (92187358).

145542242 is a wasteful number, since it uses less digits than its factorization.

145542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132121.

The product of its digits is 12800, while the sum is 29.

The square root of 145542242 is about 12064.0889419798. The cubic root of 145542242 is about 526.0128498550.

Adding to 145542242 its reverse (242245541), we get a palindrome (387787783).

The spelling of 145542242 in words is "one hundred forty-five million, five hundred forty-two thousand, two hundred forty-two".