142513305 has 32 divisors (see below), whose sum is σ = 249333120. Its totient is φ = 68935680.

The previous prime is 142513277. The next prime is 142513321. The reversal of 142513305 is 503315241.

142513305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142513305 - 2¹³ = 142505113 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100441 + ... + 101849.

It is an arithmetic number, because the mean of its divisors is an integer number (7791660).

Almost surely, 2^142513305 is an apocalyptic number.

142513305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142513305 is a deficient number, since it is larger than the sum of its proper divisors (106819815).

142513305 is a wasteful number, since it uses less digits than its factorization.

142513305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 142513305 is about 11937.8936584307. The cubic root of 142513305 is about 522.3382190309.

Adding to 142513305 its reverse (503315241), we get a palindrome (645828546).

The spelling of 142513305 in words is "one hundred forty-two million, five hundred thirteen thousand, three hundred five".