10042023421 has 2 divisors, whose sum is σ = 10042023422. Its totient is φ = 10042023420.

The previous prime is 10042023413. The next prime is 10042023461. The reversal of 10042023421 is 12432024001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9026900100 + 1015123321 = 95010^2 + 31861^2 .

It is a cyclic number.

It is not a de Polignac number, because 10042023421 - 2³ = 10042023413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10042023461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021011710 + 5021011711.

It is an arithmetic number, because the mean of its divisors is an integer number (5021011711).

Almost surely, 2^10042023421 is an apocalyptic number.

It is an amenable number.

10042023421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10042023421 is an equidigital number, since it uses as much as digits as its factorization.

10042023421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10042023421 its reverse (12432024001), we get a palindrome (22474047422).

The spelling of 10042023421 in words is "ten billion, forty-two million, twenty-three thousand, four hundred twenty-one".