10342042821 has 48 divisors (see below), whose sum is σ = 16928184000. Its totient is φ = 6257502720.

The previous prime is 10342042813. The next prime is 10342042853. The reversal of 10342042821 is 12824024301.

It is not a de Polignac number, because 10342042821 - 2³ = 10342042813 is a prime.

It is a super-2 number, since 2×10342042821² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10342042861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1796055 + ... + 1801803.

It is an arithmetic number, because the mean of its divisors is an integer number (352670500).

Almost surely, 2^10342042821 is an apocalyptic number.

10342042821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10342042821 is a deficient number, since it is larger than the sum of its proper divisors (6586141179).

10342042821 is an equidigital number, since it uses as much as digits as its factorization.

10342042821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 10342042821 in words is "ten billion, three hundred forty-two million, forty-two thousand, eight hundred twenty-one".