920320129 has 8 divisors (see below), whose sum is σ = 945966528. Its totient is φ = 894714480.

The previous prime is 920320127. The next prime is 920320139. The reversal of 920320129 is 921023029.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 920320129 - 2¹ = 920320127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920320097 and 920320106.

It is not an unprimeable number, because it can be changed into a prime (920320127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38844 + ... + 57874.

It is an arithmetic number, because the mean of its divisors is an integer number (118245816).

Almost surely, 2^920320129 is an apocalyptic number.

It is an amenable number.

920320129 is a deficient number, since it is larger than the sum of its proper divisors (25646399).

920320129 is a wasteful number, since it uses less digits than its factorization.

920320129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20375.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 920320129 is about 30336.7784875059. The cubic root of 920320129 is about 972.7016225166.

The spelling of 920320129 in words is "nine hundred twenty million, three hundred twenty thousand, one hundred twenty-nine".