37421387 has 2 divisors, whose sum is σ = 37421388. Its totient is φ = 37421386.

The previous prime is 37421383. The next prime is 37421389. The reversal of 37421387 is 78312473.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37421387 - 2² = 37421383 is a prime.

Together with 37421389, 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 (37421381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18710693 + 18710694.

It is an arithmetic number, because the mean of its divisors is an integer number (18710694).

Almost surely, 2^37421387 is an apocalyptic number.

37421387 is a deficient number, since it is larger than the sum of its proper divisors (1).

37421387 is an equidigital number, since it uses as much as digits as its factorization.

37421387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 37421387 is about 6117.3022648877. The cubic root of 37421387 is about 334.4824174873.

The spelling of 37421387 in words is "thirty-seven million, four hundred twenty-one thousand, three hundred eighty-seven".