10243001421 has 8 divisors (see below), whose sum is σ = 15174816960. Its totient is φ = 6828667596.

The previous prime is 10243001383. The next prime is 10243001437. The reversal of 10243001421 is 12410034201.

10243001421 is a `hidden beast` number, since 1 + 0 + 243 + 0 + 0 + 1 + 421 = 666.

It is not a de Polignac number, because 10243001421 - 2²⁶ = 10175892557 is a prime.

It is a super-2 number, since 2×10243001421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10243001394 and 10243001403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10243001621) 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, 189685185 + ... + 189685238.

It is an arithmetic number, because the mean of its divisors is an integer number (1896852120).

Almost surely, 2^10243001421 is an apocalyptic number.

It is an amenable number.

10243001421 is a deficient number, since it is larger than the sum of its proper divisors (4931815539).

10243001421 is an equidigital number, since it uses as much as digits as its factorization.

10243001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379370432 (or 379370426 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10243001421 its reverse (12410034201), we get a palindrome (22653035622).

The spelling of 10243001421 in words is "ten billion, two hundred forty-three million, one thousand, four hundred twenty-one".