37742321 has 2 divisors, whose sum is σ = 37742322. Its totient is φ = 37742320.

The previous prime is 37742317. The next prime is 37742323. The reversal of 37742321 is 12324773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36772096 + 970225 = 6064^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 37742321 - 2² = 37742317 is a prime.

Together with 37742323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37742323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18871160 + 18871161.

It is an arithmetic number, because the mean of its divisors is an integer number (18871161).

Almost surely, 2^37742321 is an apocalyptic number.

It is an amenable number.

37742321 is a deficient number, since it is larger than the sum of its proper divisors (1).

37742321 is an equidigital number, since it uses as much as digits as its factorization.

37742321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 29.

The square root of 37742321 is about 6143.4779237823. The cubic root of 37742321 is about 335.4358950402.

The spelling of 37742321 in words is "thirty-seven million, seven hundred forty-two thousand, three hundred twenty-one".