21235049 has 8 divisors (see below), whose sum is σ = 24172992. Its totient is φ = 18465040.

The previous prime is 21235037. The next prime is 21235051. The reversal of 21235049 is 94053212.

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

It is not a de Polignac number, because 21235049 - 2⁸ = 21234793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21235009) 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, 41714 + ... + 42219.

It is an arithmetic number, because the mean of its divisors is an integer number (3021624).

Almost surely, 2^21235049 is an apocalyptic number.

It is an amenable number.

21235049 is a deficient number, since it is larger than the sum of its proper divisors (2937943).

21235049 is a wasteful number, since it uses less digits than its factorization.

21235049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83967.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 21235049 is about 4608.1502796675. The cubic root of 21235049 is about 276.9179380437.

The spelling of 21235049 in words is "twenty-one million, two hundred thirty-five thousand, forty-nine".