144332542 has 4 divisors (see below), whose sum is σ = 216498816. Its totient is φ = 72166270.

The previous prime is 144332537. The next prime is 144332543. The reversal of 144332542 is 245233441.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 144332542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144332543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36083134 + ... + 36083137.

It is an arithmetic number, because the mean of its divisors is an integer number (54124704).

Almost surely, 2^144332542 is an apocalyptic number.

144332542 is a deficient number, since it is larger than the sum of its proper divisors (72166274).

144332542 is an equidigital number, since it uses as much as digits as its factorization.

144332542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72166273.

The product of its digits is 11520, while the sum is 28.

The square root of 144332542 is about 12013.8479264555. The cubic root of 144332542 is about 524.5514439259.

Adding to 144332542 its reverse (245233441), we get a palindrome (389565983).

The spelling of 144332542 in words is "one hundred forty-four million, three hundred thirty-two thousand, five hundred forty-two".