7490412421 has 2 divisors, whose sum is σ = 7490412422. Its totient is φ = 7490412420.

The previous prime is 7490412361. The next prime is 7490412443. The reversal of 7490412421 is 1242140947.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7074660321 + 415752100 = 84111^2 + 20390^2 .

It is an emirp because it is prime and its reverse (1242140947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7490412421 - 2¹¹ = 7490410373 is a prime.

It is a super-2 number, since 2×7490412421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7490412521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3745206210 + 3745206211.

It is an arithmetic number, because the mean of its divisors is an integer number (3745206211).

Almost surely, 2^7490412421 is an apocalyptic number.

It is an amenable number.

7490412421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7490412421 is an equidigital number, since it uses as much as digits as its factorization.

7490412421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 7490412421 is about 86547.1687636285. The cubic root of 7490412421 is about 1956.5993737404.

The spelling of 7490412421 in words is "seven billion, four hundred ninety million, four hundred twelve thousand, four hundred twenty-one".