920020642 has 8 divisors (see below), whose sum is σ = 1387256832. Its totient is φ = 457601700.

The previous prime is 920020601. The next prime is 920020643. The reversal of 920020642 is 246020029.

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

It is not an unprimeable number, because it can be changed into a prime (920020643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203834 + ... + 1204597.

It is an arithmetic number, because the mean of its divisors is an integer number (173407104).

Almost surely, 2^920020642 is an apocalyptic number.

920020642 is a deficient number, since it is larger than the sum of its proper divisors (467236190).

920020642 is a wasteful number, since it uses less digits than its factorization.

920020642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408624.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 920020642 is about 30331.8420475908. The cubic root of 920020642 is about 972.5961001422.

The spelling of 920020642 in words is "nine hundred twenty million, twenty thousand, six hundred forty-two".