21403234041 has 8 divisors (see below), whose sum is σ = 32614451904. Its totient is φ = 12230419440.

The previous prime is 21403233997. The next prime is 21403234043. The reversal of 21403234041 is 14043230412.

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

It is not a de Polignac number, because 21403234041 - 2⁷ = 21403233913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21403234043) 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, 509600790 + ... + 509600831.

It is an arithmetic number, because the mean of its divisors is an integer number (4076806488).

Almost surely, 2^21403234041 is an apocalyptic number.

21403234041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21403234041 is a deficient number, since it is larger than the sum of its proper divisors (11211217863).

21403234041 is a wasteful number, since it uses less digits than its factorization.

21403234041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019201631.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21403234041 its reverse (14043230412), we get a palindrome (35446464453).

The spelling of 21403234041 in words is "twenty-one billion, four hundred three million, two hundred thirty-four thousand, forty-one".