20420411401 has 8 divisors (see below), whose sum is σ = 22009123080. Its totient is φ = 18834258432.

The previous prime is 20420411387. The next prime is 20420411437. The reversal of 20420411401 is 10411402402.

It can be written as a sum of positive squares in 4 ways, for example, as 8566428025 + 11853983376 = 92555^2 + 108876^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20420411401 - 2¹³ = 20420403209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20420411801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623080 + ... + 655033.

It is an arithmetic number, because the mean of its divisors is an integer number (2751140385).

Almost surely, 2^20420411401 is an apocalyptic number.

It is an amenable number.

20420411401 is a deficient number, since it is larger than the sum of its proper divisors (1588711679).

20420411401 is a wasteful number, since it uses less digits than its factorization.

20420411401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279355.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20420411401 its reverse (10411402402), we get a palindrome (30831813803).

The spelling of 20420411401 in words is "twenty billion, four hundred twenty million, four hundred eleven thousand, four hundred one".