142244330 has 16 divisors (see below), whose sum is σ = 256805640. Its totient is φ = 56727552.

The previous prime is 142244327. The next prime is 142244353. The reversal of 142244330 is 33442241.

It can be written as a sum of positive squares in 4 ways, for example, as 118439689 + 23804641 = 10883^2 + 4879^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142244296 and 142244305.

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, 17735 + ... + 24474.

Almost surely, 2^142244330 is an apocalyptic number.

142244330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142244330 is a deficient number, since it is larger than the sum of its proper divisors (114561310).

142244330 is a wasteful number, since it uses less digits than its factorization.

142244330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42553.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 142244330 is about 11926.6227407427. The cubic root of 142244330 is about 522.0093973245.

Adding to 142244330 its reverse (33442241), we get a palindrome (175686571).

The spelling of 142244330 in words is "one hundred forty-two million, two hundred forty-four thousand, three hundred thirty".