20120442401 has 8 divisors (see below), whose sum is σ = 20323315584. Its totient is φ = 19917641200.

The previous prime is 20120442379. The next prime is 20120442409. The reversal of 20120442401 is 10424402102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120442401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120442409) 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, 678650 + ... + 707676.

It is an arithmetic number, because the mean of its divisors is an integer number (2540414448).

Almost surely, 2^20120442401 is an apocalyptic number.

It is an amenable number.

20120442401 is a deficient number, since it is larger than the sum of its proper divisors (202873183).

20120442401 is a wasteful number, since it uses less digits than its factorization.

20120442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35991.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20120442401 its reverse (10424402102), we get a palindrome (30544844503).

The spelling of 20120442401 in words is "twenty billion, one hundred twenty million, four hundred forty-two thousand, four hundred one".