74337421 has 2 divisors, whose sum is σ = 74337422. Its totient is φ = 74337420.

The previous prime is 74337407. The next prime is 74337437. The reversal of 74337421 is 12473347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67420521 + 6916900 = 8211^2 + 2630^2 .

It is an emirp because it is prime and its reverse (12473347) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74337421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74337401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37168710 + 37168711.

It is an arithmetic number, because the mean of its divisors is an integer number (37168711).

Almost surely, 2^74337421 is an apocalyptic number.

It is an amenable number.

74337421 is a deficient number, since it is larger than the sum of its proper divisors (1).

74337421 is an equidigital number, since it uses as much as digits as its factorization.

74337421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 31.

The square root of 74337421 is about 8621.9151584784. The cubic root of 74337421 is about 420.4707891651.

The spelling of 74337421 in words is "seventy-four million, three hundred thirty-seven thousand, four hundred twenty-one".