10521042405 has 32 divisors (see below), whose sum is σ = 17120332800. Its totient is φ = 5515783680.

The previous prime is 10521042397. The next prime is 10521042409. The reversal of 10521042405 is 50424012501.

It is not a de Polignac number, because 10521042405 - 2³ = 10521042397 is a prime.

It is a super-2 number, since 2×10521042405² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521042409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2192689 + ... + 2197481.

It is an arithmetic number, because the mean of its divisors is an integer number (535010400).

Almost surely, 2^10521042405 is an apocalyptic number.

10521042405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10521042405 is a deficient number, since it is larger than the sum of its proper divisors (6599290395).

10521042405 is a wasteful number, since it uses less digits than its factorization.

10521042405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 10521042405 its reverse (50424012501), we get a palindrome (60945054906).

The spelling of 10521042405 in words is "ten billion, five hundred twenty-one million, forty-two thousand, four hundred five".