21514034242 has 8 divisors (see below), whose sum is σ = 34169348556. Its totient is φ = 10124251392.

The previous prime is 21514034219. The next prime is 21514034251. The reversal of 21514034242 is 24243041512.

It can be written as a sum of positive squares in 2 ways, for example, as 17644074561 + 3869959681 = 132831^2 + 62209^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21514034242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316382823 + ... + 316382890.

Almost surely, 2^21514034242 is an apocalyptic number.

21514034242 is a deficient number, since it is larger than the sum of its proper divisors (12655314314).

21514034242 is a wasteful number, since it uses less digits than its factorization.

21514034242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632765732.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 21514034242 its reverse (24243041512), we get a palindrome (45757075754).

The spelling of 21514034242 in words is "twenty-one billion, five hundred fourteen million, thirty-four thousand, two hundred forty-two".