920145 has 8 divisors (see below), whose sum is σ = 1472256. Its totient is φ = 490736.

The previous prime is 920137. The next prime is 920147. The reversal of 920145 is 541029.

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 920145 - 2³ = 920137 is a prime.

920145 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920145.

It is not an unprimeable number, because it can be changed into a prime (920147) 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, 30657 + ... + 30686.

It is an arithmetic number, because the mean of its divisors is an integer number (184032).

2⁹²⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

920145 is a deficient number, since it is larger than the sum of its proper divisors (552111).

920145 is a wasteful number, since it uses less digits than its factorization.

920145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61351.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 920145 is about 959.2418881596. The cubic root of 920145 is about 97.2639919687.

The spelling of 920145 in words is "nine hundred twenty thousand, one hundred forty-five".