20120401 has 8 divisors (see below), whose sum is σ = 24347520. Its totient is φ = 16231488.

The previous prime is 20120383. The next prime is 20120407. The reversal of 20120401 is 10402102.

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

It is not a de Polignac number, because 20120401 - 2¹⁷ = 19989329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120407) 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, 84421 + ... + 84658.

It is an arithmetic number, because the mean of its divisors is an integer number (3043440).

Almost surely, 2^20120401 is an apocalyptic number.

It is an amenable number.

20120401 is a deficient number, since it is larger than the sum of its proper divisors (4227119).

20120401 is a wasteful number, since it uses less digits than its factorization.

20120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169103.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20120401 is about 4485.5769974441. The cubic root of 20120401 is about 271.9853699239.

Adding to 20120401 its reverse (10402102), we get a palindrome (30522503).

It can be divided in two parts, 201 and 20401, that added together give a palindrome (20602).

The spelling of 20120401 in words is "twenty million, one hundred twenty thousand, four hundred one".