920642 has 8 divisors (see below), whose sum is σ = 1385100. Its totient is φ = 458944.

The previous prime is 920641. The next prime is 920651. The reversal of 920642 is 246029.

It can be written as a sum of positive squares in 2 ways, for example, as 919681 + 961 = 959^2 + 31^2 .

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920642.

It is not an unprimeable number, because it can be changed into a prime (920641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734 + ... + 1542.

2⁹²⁰⁶⁴² is an apocalyptic number.

920642 is a deficient number, since it is larger than the sum of its proper divisors (464458).

920642 is a wasteful number, since it uses less digits than its factorization.

920642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 920642 is about 959.5009119329. The cubic root of 920642 is about 97.2815006234.

The spelling of 920642 in words is "nine hundred twenty thousand, six hundred forty-two".