142306522 has 8 divisors (see below), whose sum is σ = 218424096. Its totient is φ = 69498492.

The previous prime is 142306519. The next prime is 142306529. The reversal of 142306522 is 225603241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×142306522² = 40502292407472968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142306529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827278 + ... + 827449.

It is an arithmetic number, because the mean of its divisors is an integer number (27303012).

Almost surely, 2^142306522 is an apocalyptic number.

142306522 is a deficient number, since it is larger than the sum of its proper divisors (76117574).

142306522 is a wasteful number, since it uses less digits than its factorization.

142306522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654772.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 142306522 is about 11929.2297320489. The cubic root of 142306522 is about 522.0854638085.

Adding to 142306522 its reverse (225603241), we get a palindrome (367909763).

The spelling of 142306522 in words is "one hundred forty-two million, three hundred six thousand, five hundred twenty-two".