21041233242 has 32 divisors (see below), whose sum is σ = 42516736704. Its totient is φ = 6941424000.

The previous prime is 21041233237. The next prime is 21041233247. The reversal of 21041233242 is 24233214012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21041233237) and next prime (21041233247).

It is not an unprimeable number, because it can be changed into a prime (21041233247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1852942 + ... + 1864262.

It is an arithmetic number, because the mean of its divisors is an integer number (1328648022).

Almost surely, 2^21041233242 is an apocalyptic number.

21041233242 is an abundant number, since it is smaller than the sum of its proper divisors (21475503462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21041233242 is a wasteful number, since it uses less digits than its factorization.

21041233242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494.

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

Adding to 21041233242 its reverse (24233214012), we get a palindrome (45274447254).

The spelling of 21041233242 in words is "twenty-one billion, forty-one million, two hundred thirty-three thousand, two hundred forty-two".