842545121 has 16 divisors (see below), whose sum is σ = 946584576. Its totient is φ = 743280000.

The previous prime is 842545103. The next prime is 842545127. The reversal of 842545121 is 121545248.

842545121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 842545121 - 2⁶ = 842545057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (842545127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81251 + ... + 91031.

It is an arithmetic number, because the mean of its divisors is an integer number (59161536).

Almost surely, 2^842545121 is an apocalyptic number.

It is an amenable number.

842545121 is a deficient number, since it is larger than the sum of its proper divisors (104039455).

842545121 is a wasteful number, since it uses less digits than its factorization.

842545121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10024.

The product of its digits is 12800, while the sum is 32.

The square root of 842545121 is about 29026.6277924254. The cubic root of 842545121 is about 944.4907798408.

The spelling of 842545121 in words is "eight hundred forty-two million, five hundred forty-five thousand, one hundred twenty-one".