142321522 has 16 divisors (see below), whose sum is σ = 245620800. Its totient is φ = 60584688.

The previous prime is 142321513. The next prime is 142321547. The reversal of 142321522 is 225123241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142321493 and 142321502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32028 + ... + 36199.

It is an arithmetic number, because the mean of its divisors is an integer number (15351300).

Almost surely, 2^142321522 is an apocalyptic number.

142321522 is a deficient number, since it is larger than the sum of its proper divisors (103299278).

142321522 is a wasteful number, since it uses less digits than its factorization.

142321522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68385.

The product of its digits is 960, while the sum is 22.

The square root of 142321522 is about 11929.8584233008. The cubic root of 142321522 is about 522.1038068582.

Adding to 142321522 its reverse (225123241), we get a palindrome (367444763).

The spelling of 142321522 in words is "one hundred forty-two million, three hundred twenty-one thousand, five hundred twenty-two".