40006062420421 has 2 divisors, whose sum is σ = 40006062420422. Its totient is φ = 40006062420420.

The previous prime is 40006062420413. The next prime is 40006062420437. The reversal of 40006062420421 is 12402426060004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38558759584900 + 1447302835521 = 6209570^2 + 1203039^2 .

It is a cyclic number.

It is not a de Polignac number, because 40006062420421 - 2³ = 40006062420413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40006062480421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003031210210 + 20003031210211.

It is an arithmetic number, because the mean of its divisors is an integer number (20003031210211).

Almost surely, 2^{40006062420421} is an apocalyptic number.

It is an amenable number.

40006062420421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006062420421 is an equidigital number, since it uses as much as digits as its factorization.

40006062420421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 40006062420421 its reverse (12402426060004), we get a palindrome (52408488480425).

The spelling of 40006062420421 in words is "forty trillion, six billion, sixty-two million, four hundred twenty thousand, four hundred twenty-one".