74010421 has 2 divisors, whose sum is σ = 74010422. Its totient is φ = 74010420.

The previous prime is 74010403. The next prime is 74010437. The reversal of 74010421 is 12401047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 12152196 = 7865^2 + 3486^2 .

It is an emirp because it is prime and its reverse (12401047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74010421 - 2²³ = 65621813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37005210 + 37005211.

It is an arithmetic number, because the mean of its divisors is an integer number (37005211).

Almost surely, 2^74010421 is an apocalyptic number.

It is an amenable number.

74010421 is a deficient number, since it is larger than the sum of its proper divisors (1).

74010421 is an equidigital number, since it uses as much as digits as its factorization.

74010421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 74010421 is about 8602.9309540412. The cubic root of 74010421 is about 419.8533520523.

Adding to 74010421 its reverse (12401047), we get a palindrome (86411468).

The spelling of 74010421 in words is "seventy-four million, ten thousand, four hundred twenty-one".