74214157 has 2 divisors, whose sum is σ = 74214158. Its totient is φ = 74214156.

The previous prime is 74214149. The next prime is 74214167. The reversal of 74214157 is 75141247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49154121 + 25060036 = 7011^2 + 5006^2 .

It is an emirp because it is prime and its reverse (75141247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74214157 - 2³ = 74214149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74214137) 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, 37107078 + 37107079.

It is an arithmetic number, because the mean of its divisors is an integer number (37107079).

Almost surely, 2^74214157 is an apocalyptic number.

It is an amenable number.

74214157 is a deficient number, since it is larger than the sum of its proper divisors (1).

74214157 is an equidigital number, since it uses as much as digits as its factorization.

74214157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 31.

The square root of 74214157 is about 8614.7638969388. The cubic root of 74214157 is about 420.2382567290.

The spelling of 74214157 in words is "seventy-four million, two hundred fourteen thousand, one hundred fifty-seven".