10521020042 has 16 divisors (see below), whose sum is σ = 17734429440. Its totient is φ = 4644730992.

The previous prime is 10521020039. The next prime is 10521020063. The reversal of 10521020042 is 24002012501.

It is a super-2 number, since 2×10521020042² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10521020042.

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, 8796242 + ... + 8797437.

It is an arithmetic number, because the mean of its divisors is an integer number (1108401840).

Almost surely, 2^10521020042 is an apocalyptic number.

10521020042 is a deficient number, since it is larger than the sum of its proper divisors (7213409398).

10521020042 is a wasteful number, since it uses less digits than its factorization.

10521020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17593717.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 10521020042 its reverse (24002012501), we get a palindrome (34523032543).

The spelling of 10521020042 in words is "ten billion, five hundred twenty-one million, twenty thousand, forty-two".