13121421342 has 32 divisors (see below), whose sum is σ = 26586921600. Its totient is φ = 4316766048.

The previous prime is 13121421263. The next prime is 13121421343. The reversal of 13121421342 is 24312412131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121421343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134709 + ... + 210687.

It is an arithmetic number, because the mean of its divisors is an integer number (830841300).

Almost surely, 2^13121421342 is an apocalyptic number.

13121421342 is an abundant number, since it is smaller than the sum of its proper divisors (13465500258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121421342 is a wasteful number, since it uses less digits than its factorization.

13121421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76360.

The product of its digits is 1152, while the sum is 24.

Adding to 13121421342 its reverse (24312412131), we get a palindrome (37433833473).

The spelling of 13121421342 in words is "thirteen billion, one hundred twenty-one million, four hundred twenty-one thousand, three hundred forty-two".