142421716 has 48 divisors (see below), whose sum is σ = 270663120. Its totient is φ = 65331200.

The previous prime is 142421711. The next prime is 142421723. The reversal of 142421716 is 617124241.

It can be written as a sum of positive squares in 8 ways, for example, as 1904400 + 140517316 = 1380^2 + 11854^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611136 + ... + 611368.

It is an arithmetic number, because the mean of its divisors is an integer number (5638815).

Almost surely, 2^142421716 is an apocalyptic number.

It is an amenable number.

142421716 is a deficient number, since it is larger than the sum of its proper divisors (128241404).

142421716 is a wasteful number, since it uses less digits than its factorization.

142421716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 142421716 is about 11934.0569799210. The cubic root of 142421716 is about 522.2262980484.

Adding to 142421716 its reverse (617124241), we get a palindrome (759545957).

The spelling of 142421716 in words is "one hundred forty-two million, four hundred twenty-one thousand, seven hundred sixteen".