40230030143021 has 2 divisors, whose sum is σ = 40230030143022. Its totient is φ = 40230030143020.

The previous prime is 40230030143011. The next prime is 40230030143057. The reversal of 40230030143021 is 12034103003204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39001898522500 + 1228131620521 = 6245150^2 + 1108211^2 .

It is a cyclic number.

It is not a de Polignac number, because 40230030143021 - 2⁶ = 40230030142957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40230030143011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115015071510 + 20115015071511.

It is an arithmetic number, because the mean of its divisors is an integer number (20115015071511).

Almost surely, 2^{40230030143021} is an apocalyptic number.

It is an amenable number.

40230030143021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230030143021 is an equidigital number, since it uses as much as digits as its factorization.

40230030143021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40230030143021 its reverse (12034103003204), we get a palindrome (52264133146225).

The spelling of 40230030143021 in words is "forty trillion, two hundred thirty billion, thirty million, one hundred forty-three thousand, twenty-one".