21394110429 has 24 divisors (see below), whose sum is σ = 31409007552. Its totient is φ = 14029928640.

The previous prime is 21394110401. The next prime is 21394110449. The reversal of 21394110429 is 92401149312.

21394110429 is a `hidden beast` number, since 213 + 9 + 4 + 1 + 10 + 429 = 666.

It is not a de Polignac number, because 21394110429 - 2¹⁹ = 21393586141 is a prime.

It is a super-2 number, since 2×21394110429² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21394110393 and 21394110402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21394110449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245289 + ... + 320865.

It is an arithmetic number, because the mean of its divisors is an integer number (1308708648).

Almost surely, 2^21394110429 is an apocalyptic number.

It is an amenable number.

21394110429 is a deficient number, since it is larger than the sum of its proper divisors (10014897123).

21394110429 is a wasteful number, since it uses less digits than its factorization.

21394110429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76097 (or 76094 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 21394110429 in words is "twenty-one billion, three hundred ninety-four million, one hundred ten thousand, four hundred twenty-nine".