10120845 has 32 divisors (see below), whose sum is σ = 18692352. Its totient is φ = 4580352.

The previous prime is 10120843. The next prime is 10120921. The reversal of 10120845 is 54802101.

It is not a de Polignac number, because 10120845 - 2¹ = 10120843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11439 + ... + 12291.

It is an arithmetic number, because the mean of its divisors is an integer number (584136).

Almost surely, 2^10120845 is an apocalyptic number.

10120845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10120845 is a deficient number, since it is larger than the sum of its proper divisors (8571507).

10120845 is a wasteful number, since it uses less digits than its factorization.

10120845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10120845 is about 3181.3275530822. The cubic root of 10120845 is about 216.3078386727.

Adding to 10120845 its reverse (54802101), we get a palindrome (64922946).

The spelling of 10120845 in words is "ten million, one hundred twenty thousand, eight hundred forty-five".