142932905 has 16 divisors (see below), whose sum is σ = 174856080. Its totient is φ = 112140288.

The previous prime is 142932901. The next prime is 142932913. The reversal of 142932905 is 509239241.

142932905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4376464 + 138556441 = 2092^2 + 11771^2 .

It is a cyclic number.

It is not a de Polignac number, because 142932905 - 2² = 142932901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142932901) 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, 69431 + ... + 71459.

It is an arithmetic number, because the mean of its divisors is an integer number (10928505).

Almost surely, 2^142932905 is an apocalyptic number.

It is an amenable number.

142932905 is a deficient number, since it is larger than the sum of its proper divisors (31923175).

142932905 is a wasteful number, since it uses less digits than its factorization.

142932905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 142932905 is about 11955.4550310726. The cubic root of 142932905 is about 522.8503545237.

The spelling of 142932905 in words is "one hundred forty-two million, nine hundred thirty-two thousand, nine hundred five".