21241702 has 16 divisors (see below), whose sum is σ = 32432400. Its totient is φ = 10432800.

The previous prime is 21241667. The next prime is 21241723. The reversal of 21241702 is 20714212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21241702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29952 + ... + 30652.

It is an arithmetic number, because the mean of its divisors is an integer number (2027025).

Almost surely, 2^21241702 is an apocalyptic number.

21241702 is a deficient number, since it is larger than the sum of its proper divisors (11190698).

21241702 is a wasteful number, since it uses less digits than its factorization.

21241702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 21241702 is about 4608.8720962943. The cubic root of 21241702 is about 276.9468547444.

Adding to 21241702 its reverse (20714212), we get a palindrome (41955914).

It can be divided in two parts, 212 and 41702, that added together give a palindrome (41914).

The spelling of 21241702 in words is "twenty-one million, two hundred forty-one thousand, seven hundred two".