142840450 has 12 divisors (see below), whose sum is σ = 265683330. Its totient is φ = 57136160.

The previous prime is 142840441. The next prime is 142840469. The reversal of 142840450 is 54048241.

It can be written as a sum of positive squares in 3 ways, for example, as 78375609 + 64464841 = 8853^2 + 8029^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428355 + ... + 1428454.

Almost surely, 2^142840450 is an apocalyptic number.

142840450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142840450 is a deficient number, since it is larger than the sum of its proper divisors (122842880).

142840450 is a wasteful number, since it uses less digits than its factorization.

142840450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856821 (or 2856816 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 142840450 is about 11951.5877606283. The cubic root of 142840450 is about 522.7375963591.

Adding to 142840450 its reverse (54048241), we get a palindrome (196888691).

The spelling of 142840450 in words is "one hundred forty-two million, eight hundred forty thousand, four hundred fifty".