20134400342 has 32 divisors (see below), whose sum is σ = 34841219904. Its totient is φ = 8547840000.

The previous prime is 20134400329. The next prime is 20134400389. The reversal of 20134400342 is 24300443102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5030342 + ... + 5034342.

It is an arithmetic number, because the mean of its divisors is an integer number (1088788122).

Almost surely, 2^20134400342 is an apocalyptic number.

20134400342 is a deficient number, since it is larger than the sum of its proper divisors (14706819562).

20134400342 is a wasteful number, since it uses less digits than its factorization.

20134400342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7304.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20134400342 its reverse (24300443102), we get a palindrome (44434843444).

The spelling of 20134400342 in words is "twenty billion, one hundred thirty-four million, four hundred thousand, three hundred forty-two".