10420254521 has 8 divisors (see below), whose sum is σ = 10695991680. Its totient is φ = 10146768688.

The previous prime is 10420254517. The next prime is 10420254539. The reversal of 10420254521 is 12545202401.

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

It is a cyclic number.

It is not a de Polignac number, because 10420254521 - 2² = 10420254517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10420254541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553451 + ... + 571968.

It is an arithmetic number, because the mean of its divisors is an integer number (1336998960).

Almost surely, 2^10420254521 is an apocalyptic number.

It is an amenable number.

10420254521 is a deficient number, since it is larger than the sum of its proper divisors (275737159).

10420254521 is a wasteful number, since it uses less digits than its factorization.

10420254521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125663.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 10420254521 its reverse (12545202401), we get a palindrome (22965456922).

The spelling of 10420254521 in words is "ten billion, four hundred twenty million, two hundred fifty-four thousand, five hundred twenty-one".