142205505 has 32 divisors (see below), whose sum is σ = 246032640. Its totient is φ = 69722880.

The previous prime is 142205501. The next prime is 142205513. The reversal of 142205505 is 505502241.

It is a happy number.

It is not a de Polignac number, because 142205505 - 2² = 142205501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142205501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51100 + ... + 53810.

It is an arithmetic number, because the mean of its divisors is an integer number (7688520).

Almost surely, 2^142205505 is an apocalyptic number.

142205505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142205505 is a deficient number, since it is larger than the sum of its proper divisors (103827135).

142205505 is a wasteful number, since it uses less digits than its factorization.

142205505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 142205505 is about 11924.9949685524. The cubic root of 142205505 is about 521.9618995694.

Adding to 142205505 its reverse (505502241), we get a palindrome (647707746).

The spelling of 142205505 in words is "one hundred forty-two million, two hundred five thousand, five hundred five".