38070421 has 2 divisors, whose sum is σ = 38070422. Its totient is φ = 38070420.

The previous prime is 38070407. The next prime is 38070457. The reversal of 38070421 is 12407083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 1521 = 6170^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 38070421 - 2⁹ = 38069909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38070401) 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, 19035210 + 19035211.

It is an arithmetic number, because the mean of its divisors is an integer number (19035211).

Almost surely, 2^38070421 is an apocalyptic number.

It is an amenable number.

38070421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38070421 is an equidigital number, since it uses as much as digits as its factorization.

38070421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 38070421 is about 6170.1232564674. The cubic root of 38070421 is about 336.4050911809.

The spelling of 38070421 in words is "thirty-eight million, seventy thousand, four hundred twenty-one".