10120402005 has 32 divisors (see below), whose sum is σ = 19594462464. Its totient is φ = 4354323456.

The previous prime is 10120401997. The next prime is 10120402007. The reversal of 10120402005 is 50020402101.

It is not a de Polignac number, because 10120402005 - 2³ = 10120401997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120402007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2833062 + ... + 2836631.

It is an arithmetic number, because the mean of its divisors is an integer number (612326952).

Almost surely, 2^10120402005 is an apocalyptic number.

10120402005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10120402005 is a deficient number, since it is larger than the sum of its proper divisors (9474060459).

10120402005 is a wasteful number, since it uses less digits than its factorization.

10120402005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669725.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 10120402005 its reverse (50020402101), we get a palindrome (60140804106).

The spelling of 10120402005 in words is "ten billion, one hundred twenty million, four hundred two thousand, five".