142021245505 has 16 divisors (see below), whose sum is σ = 179473161600. Its totient is φ = 107590412160.

The previous prime is 142021245493. The next prime is 142021245511. The reversal of 142021245505 is 505542120241.

It is not a de Polignac number, because 142021245505 - 2¹³ = 142021237313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103900 + ... + 542989.

It is an arithmetic number, because the mean of its divisors is an integer number (11217072600).

Almost surely, 2^142021245505 is an apocalyptic number.

It is an amenable number.

142021245505 is a deficient number, since it is larger than the sum of its proper divisors (37451916095).

142021245505 is a wasteful number, since it uses less digits than its factorization.

142021245505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649224.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 142021245505 its reverse (505542120241), we get a palindrome (647563365746).

The spelling of 142021245505 in words is "one hundred forty-two billion, twenty-one million, two hundred forty-five thousand, five hundred five".