142205524 has 6 divisors (see below), whose sum is σ = 248859674. Its totient is φ = 71102760.

The previous prime is 142205513. The next prime is 142205537. The reversal of 142205524 is 425502241.

It can be written as a sum of positive squares in only one way, i.e., 89643024 + 52562500 = 9468^2 + 7250^2 .

It is a super-2 number, since 2×142205524² = 40444822112229152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17775687 + ... + 17775694.

Almost surely, 2^142205524 is an apocalyptic number.

It is an amenable number.

142205524 is a deficient number, since it is larger than the sum of its proper divisors (106654150).

142205524 is a wasteful number, since it uses less digits than its factorization.

142205524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35551385 (or 35551383 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 142205524 is about 11924.9957651984. The cubic root of 142205524 is about 521.9619228157.

Adding to 142205524 its reverse (425502241), we get a palindrome (567707765).

The spelling of 142205524 in words is "one hundred forty-two million, two hundred five thousand, five hundred twenty-four".