20120107 has 8 divisors (see below), whose sum is σ = 24204800. Its totient is φ = 16338024.

The previous prime is 20120081. The next prime is 20120143. The reversal of 20120107 is 70102102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20120107 - 2¹⁹ = 19595819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75507 + ... + 75772.

It is an arithmetic number, because the mean of its divisors is an integer number (3025600).

Almost surely, 2^20120107 is an apocalyptic number.

20120107 is a deficient number, since it is larger than the sum of its proper divisors (4084693).

20120107 is a wasteful number, since it uses less digits than its factorization.

20120107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151305.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 20120107 is about 4485.5442256208. The cubic root of 20120107 is about 271.9840451642.

Adding to 20120107 its reverse (70102102), we get a palindrome (90222209).

The spelling of 20120107 in words is "twenty million, one hundred twenty thousand, one hundred seven".