142303305 has 16 divisors (see below), whose sum is σ = 228369024. Its totient is φ = 75667200.

The previous prime is 142303283. The next prime is 142303309. The reversal of 142303305 is 503303241.

It is not a de Polignac number, because 142303305 - 2¹³ = 142295113 is a prime.

It is a super-2 number, since 2×142303305² = 40500461227846050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142303309) 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, 9021 + ... + 19130.

It is an arithmetic number, because the mean of its divisors is an integer number (14273064).

Almost surely, 2^142303305 is an apocalyptic number.

142303305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142303305 is a deficient number, since it is larger than the sum of its proper divisors (86065719).

142303305 is a wasteful number, since it uses less digits than its factorization.

142303305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28496.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 142303305 is about 11929.0948944168. The cubic root of 142303305 is about 522.0815296679.

Adding to 142303305 its reverse (503303241), we get a palindrome (645606546).

The spelling of 142303305 in words is "one hundred forty-two million, three hundred three thousand, three hundred five".