21042483 has 32 divisors (see below), whose sum is σ = 35500032. Its totient is φ = 10768800.

The previous prime is 21042479. The next prime is 21042491. The reversal of 21042483 is 38424012.

It is not a de Polignac number, because 21042483 - 2² = 21042479 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21042473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15760 + ... + 17042.

It is an arithmetic number, because the mean of its divisors is an integer number (1109376).

Almost surely, 2^21042483 is an apocalyptic number.

21042483 is a deficient number, since it is larger than the sum of its proper divisors (14457549).

21042483 is a wasteful number, since it uses less digits than its factorization.

21042483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 21042483 is about 4587.2086283491. The cubic root of 21042483 is about 276.0783357772.

Adding to 21042483 its reverse (38424012), we get a palindrome (59466495).

It can be divided in two parts, 21042 and 483, that multiplied together give a triangular number (10163286 = T₄₅₀₈).

The spelling of 21042483 in words is "twenty-one million, forty-two thousand, four hundred eighty-three".