21130401342 has 32 divisors (see below), whose sum is σ = 42995953440. Its totient is φ = 6921169920.

The previous prime is 21130401293. The next prime is 21130401359. The reversal of 21130401342 is 24310403112.

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, 350134 + ... + 406022.

It is an arithmetic number, because the mean of its divisors is an integer number (1343623545).

Almost surely, 2^21130401342 is an apocalyptic number.

21130401342 is an abundant number, since it is smaller than the sum of its proper divisors (21865552098).

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

21130401342 is a wasteful number, since it uses less digits than its factorization.

21130401342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56988.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21130401342 its reverse (24310403112), we get a palindrome (45440804454).

The spelling of 21130401342 in words is "twenty-one billion, one hundred thirty million, four hundred one thousand, three hundred forty-two".