7421400997 has 2 divisors, whose sum is σ = 7421400998. Its totient is φ = 7421400996.

The previous prime is 7421400989. The next prime is 7421401027. The reversal of 7421400997 is 7990041247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3784587361 + 3636813636 = 61519^2 + 60306^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421400997 - 2³ = 7421400989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421400907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710700498 + 3710700499.

It is an arithmetic number, because the mean of its divisors is an integer number (3710700499).

Almost surely, 2^7421400997 is an apocalyptic number.

It is an amenable number.

7421400997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421400997 is an equidigital number, since it uses as much as digits as its factorization.

7421400997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 7421400997 is about 86147.5536332867. The cubic root of 7421400997 is about 1950.5719117578.

The spelling of 7421400997 in words is "seven billion, four hundred twenty-one million, four hundred thousand, nine hundred ninety-seven".