21411233042 has 8 divisors (see below), whose sum is σ = 32118969036. Its totient is φ = 10704910032.

The previous prime is 21411232957. The next prime is 21411233059. The reversal of 21411233042 is 24033211412.

It can be written as a sum of positive squares in 2 ways, for example, as 13656493321 + 7754739721 = 116861^2 + 88061^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21411232999 and 21411233017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314513 + ... + 376484.

Almost surely, 2^21411233042 is an apocalyptic number.

21411233042 is a deficient number, since it is larger than the sum of its proper divisors (10707735994).

21411233042 is a wasteful number, since it uses less digits than its factorization.

21411233042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706492.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21411233042 its reverse (24033211412), we get a palindrome (45444444454).

The spelling of 21411233042 in words is "twenty-one billion, four hundred eleven million, two hundred thirty-three thousand, forty-two".