20124023401 has 8 divisors (see below), whose sum is σ = 20331045000. Its totient is φ = 19918000128.

The previous prime is 20124023393. The next prime is 20124023441. The reversal of 20124023401 is 10432042102.

It can be written as a sum of positive squares in 4 ways, for example, as 2125117801 + 17998905600 = 46099^2 + 134160^2 .

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 20124023401 - 2³ = 20124023393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20124023441) 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, 209026 + ... + 289723.

It is an arithmetic number, because the mean of its divisors is an integer number (2541380625).

Almost surely, 2^20124023401 is an apocalyptic number.

It is an amenable number.

20124023401 is a deficient number, since it is larger than the sum of its proper divisors (207021599).

20124023401 is a wasteful number, since it uses less digits than its factorization.

20124023401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499163.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20124023401 its reverse (10432042102), we get a palindrome (30556065503).

The spelling of 20124023401 in words is "twenty billion, one hundred twenty-four million, twenty-three thousand, four hundred one".