142224534 has 24 divisors (see below), whose sum is σ = 308374560. Its totient is φ = 47374128.

The previous prime is 142224517. The next prime is 142224539. The reversal of 142224534 is 435422241.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142224498 and 142224507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142224539) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 42432 + ... + 45660.

It is an arithmetic number, because the mean of its divisors is an integer number (12848940).

Almost surely, 2^142224534 is an apocalyptic number.

142224534 is an abundant number, since it is smaller than the sum of its proper divisors (166150026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142224534 is a wasteful number, since it uses less digits than its factorization.

142224534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684 (or 5681 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 142224534 is about 11925.7928038349. The cubic root of 142224534 is about 521.9851803605.

Adding to 142224534 its reverse (435422241), we get a palindrome (577646775).

It can be divided in two parts, 142 and 224534, that added together give a square (224676 = 474²).

The spelling of 142224534 in words is "one hundred forty-two million, two hundred twenty-four thousand, five hundred thirty-four".