920242791 has 24 divisors (see below), whose sum is σ = 1437836400. Its totient is φ = 563792256.

The previous prime is 920242787. The next prime is 920242801. The reversal of 920242791 is 197242029.

It is not a de Polignac number, because 920242791 - 2² = 920242787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920242711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9235 + ... + 43883.

It is an arithmetic number, because the mean of its divisors is an integer number (59909850).

Almost surely, 2^920242791 is an apocalyptic number.

920242791 is a deficient number, since it is larger than the sum of its proper divisors (517593609).

920242791 is a wasteful number, since it uses less digits than its factorization.

920242791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34895 (or 34892 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 920242791 is about 30335.5038032995. The cubic root of 920242791 is about 972.6743751480.

The spelling of 920242791 in words is "nine hundred twenty million, two hundred forty-two thousand, seven hundred ninety-one".