142402305 has 16 divisors (see below), whose sum is σ = 230194944. Its totient is φ = 75164160.

The previous prime is 142402301. The next prime is 142402327. The reversal of 142402305 is 503204241.

It is not a de Polignac number, because 142402305 - 2² = 142402301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142402301) 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, 47481 + ... + 50390.

It is an arithmetic number, because the mean of its divisors is an integer number (14387184).

Almost surely, 2^142402305 is an apocalyptic number.

142402305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142402305 is a deficient number, since it is larger than the sum of its proper divisors (87792639).

142402305 is an equidigital number, since it uses as much as digits as its factorization.

142402305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97976.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 142402305 is about 11933.2436914696. The cubic root of 142402305 is about 522.2025718089.

Adding to 142402305 its reverse (503204241), we get a palindrome (645606546).

The spelling of 142402305 in words is "one hundred forty-two million, four hundred two thousand, three hundred five".