20442401429 has 4 divisors (see below), whose sum is σ = 20444404320. Its totient is φ = 20440398540.

The previous prime is 20442401401. The next prime is 20442401431. The reversal of 20442401429 is 92410424402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20442401429 - 2²⁰ = 20441352853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20442401395 and 20442401404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442401459) 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, 986057 + ... + 1006574.

It is an arithmetic number, because the mean of its divisors is an integer number (5111101080).

Almost surely, 2^20442401429 is an apocalyptic number.

It is an amenable number.

20442401429 is a deficient number, since it is larger than the sum of its proper divisors (2002891).

20442401429 is a wasteful number, since it uses less digits than its factorization.

20442401429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002890.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 20442401429 in words is "twenty billion, four hundred forty-two million, four hundred one thousand, four hundred twenty-nine".