21142034413 has 8 divisors (see below), whose sum is σ = 21327445440. Its totient is φ = 20957099520.

The previous prime is 21142034383. The next prime is 21142034429. The reversal of 21142034413 is 31443024112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21142034413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142034113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29545 + ... + 207742.

It is an arithmetic number, because the mean of its divisors is an integer number (2665930680).

Almost surely, 2^21142034413 is an apocalyptic number.

It is an amenable number.

21142034413 is a deficient number, since it is larger than the sum of its proper divisors (185411027).

21142034413 is a wasteful number, since it uses less digits than its factorization.

21142034413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238067.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21142034413 its reverse (31443024112), we get a palindrome (52585058525).

The spelling of 21142034413 in words is "twenty-one billion, one hundred forty-two million, thirty-four thousand, four hundred thirteen".