20442400342 has 16 divisors (see below), whose sum is σ = 37739816352. Its totient is φ = 8087103360.

The previous prime is 20442400273. The next prime is 20442400357. The reversal of 20442400342 is 24300424402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56160259 + ... + 56160622.

It is an arithmetic number, because the mean of its divisors is an integer number (2358738522).

Almost surely, 2^20442400342 is an apocalyptic number.

20442400342 is a deficient number, since it is larger than the sum of its proper divisors (17297416010).

20442400342 is a wasteful number, since it uses less digits than its factorization.

20442400342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112320903.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 20442400342 its reverse (24300424402), we get a palindrome (44742824744).

The spelling of 20442400342 in words is "twenty billion, four hundred forty-two million, four hundred thousand, three hundred forty-two".