10420450521 has 8 divisors (see below), whose sum is σ = 14962698240. Its totient is φ = 6412584912.

The previous prime is 10420450519. The next prime is 10420450529. The reversal of 10420450521 is 12505402401.

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

It is not a de Polignac number, because 10420450521 - 2¹ = 10420450519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10420450491 and 10420450500.

It is not an unprimeable number, because it can be changed into a prime (10420450529) 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 7 ways as a sum of consecutive naturals, for example, 133595481 + ... + 133595558.

It is an arithmetic number, because the mean of its divisors is an integer number (1870337280).

Almost surely, 2^10420450521 is an apocalyptic number.

It is an amenable number.

10420450521 is a deficient number, since it is larger than the sum of its proper divisors (4542247719).

10420450521 is a wasteful number, since it uses less digits than its factorization.

10420450521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267191055.

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

Adding to 10420450521 its reverse (12505402401), we get a palindrome (22925852922).

The spelling of 10420450521 in words is "ten billion, four hundred twenty million, four hundred fifty thousand, five hundred twenty-one".