20401423202 has 8 divisors (see below), whose sum is σ = 30680804700. Its totient is φ = 10174488304.

The previous prime is 20401423201. The next prime is 20401423241. The reversal of 20401423202 is 20232410402.

It can be written as a sum of positive squares in 2 ways, for example, as 20266654321 + 134768881 = 142361^2 + 11609^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20401423201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13110677 + ... + 13112232.

Almost surely, 2^20401423202 is an apocalyptic number.

20401423202 is a deficient number, since it is larger than the sum of its proper divisors (10279381498).

20401423202 is a wasteful number, since it uses less digits than its factorization.

20401423202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26223300.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20401423202 its reverse (20232410402), we get a palindrome (40633833604).

The spelling of 20401423202 in words is "twenty billion, four hundred one million, four hundred twenty-three thousand, two hundred two".