142440545 has 8 divisors (see below), whose sum is σ = 184077096. Its totient is φ = 105186816.

The previous prime is 142440539. The next prime is 142440577. The reversal of 142440545 is 545044241.

142440545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8042896 + 134397649 = 2836^2 + 11593^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142440545 - 2⁶ = 142440481 is a prime.

It is a Duffinian number.

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, 1095632 + ... + 1095761.

It is an arithmetic number, because the mean of its divisors is an integer number (23009637).

Almost surely, 2^142440545 is an apocalyptic number.

It is an amenable number.

142440545 is a deficient number, since it is larger than the sum of its proper divisors (41636551).

142440545 is a wasteful number, since it uses less digits than its factorization.

142440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191411.

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

The square root of 142440545 is about 11934.8458305920. The cubic root of 142440545 is about 522.2493108444.

Adding to 142440545 its reverse (545044241), we get a palindrome (687484786).

The spelling of 142440545 in words is "one hundred forty-two million, four hundred forty thousand, five hundred forty-five".