921024842 has 16 divisors (see below), whose sum is σ = 1394366400. Its totient is φ = 456250080.

The previous prime is 921024823. The next prime is 921024887. The reversal of 921024842 is 248420129.

It is a happy number.

It is a super-2 number, since 2×921024842² = 1696573519162249928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 921024799 and 921024808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141659 + ... + 148017.

It is an arithmetic number, because the mean of its divisors is an integer number (87147900).

Almost surely, 2^921024842 is an apocalyptic number.

921024842 is a deficient number, since it is larger than the sum of its proper divisors (473341558).

921024842 is a wasteful number, since it uses less digits than its factorization.

921024842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 921024842 is about 30348.3910940926. The cubic root of 921024842 is about 972.9498334631.

The spelling of 921024842 in words is "nine hundred twenty-one million, twenty-four thousand, eight hundred forty-two".