7429840261 has 2 divisors, whose sum is σ = 7429840262. Its totient is φ = 7429840260.

The previous prime is 7429840177. The next prime is 7429840273. The reversal of 7429840261 is 1620489247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4665709636 + 2764130625 = 68306^2 + 52575^2 .

It is a cyclic number.

It is not a de Polignac number, because 7429840261 - 2¹⁵ = 7429807493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7429840291) 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, 3714920130 + 3714920131.

It is an arithmetic number, because the mean of its divisors is an integer number (3714920131).

Almost surely, 2^7429840261 is an apocalyptic number.

It is an amenable number.

7429840261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7429840261 is an equidigital number, since it uses as much as digits as its factorization.

7429840261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 7429840261 is about 86196.5211652999. The cubic root of 7429840261 is about 1951.3109975250.

The spelling of 7429840261 in words is "seven billion, four hundred twenty-nine million, eight hundred forty thousand, two hundred sixty-one".