142440555 has 32 divisors (see below), whose sum is σ = 234178560. Its totient is φ = 73906560.

The previous prime is 142440539. The next prime is 142440577. The reversal of 142440555 is 555044241.

It is not a de Polignac number, because 142440555 - 2⁴ = 142440539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83289 + ... + 84981.

It is an arithmetic number, because the mean of its divisors is an integer number (7318080).

Almost surely, 2^142440555 is an apocalyptic number.

142440555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142440555 is a deficient number, since it is larger than the sum of its proper divisors (91738005).

142440555 is a wasteful number, since it uses less digits than its factorization.

142440555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 142440555 is about 11934.8462495333. The cubic root of 142440555 is about 522.2493230658.

Adding to 142440555 its reverse (555044241), we get a palindrome (697484796).

The spelling of 142440555 in words is "one hundred forty-two million, four hundred forty thousand, five hundred fifty-five".