371667421 has 2 divisors, whose sum is σ = 371667422. Its totient is φ = 371667420.

The previous prime is 371667403. The next prime is 371667469. The reversal of 371667421 is 124766173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236852100 + 134815321 = 15390^2 + 11611^2 .

It is a cyclic number.

It is not a de Polignac number, because 371667421 - 2¹⁷ = 371536349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (371767421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185833710 + 185833711.

It is an arithmetic number, because the mean of its divisors is an integer number (185833711).

Almost surely, 2^371667421 is an apocalyptic number.

It is an amenable number.

371667421 is a deficient number, since it is larger than the sum of its proper divisors (1).

371667421 is an equidigital number, since it uses as much as digits as its factorization.

371667421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 371667421 is about 19278.6778851663. The cubic root of 371667421 is about 718.9822432252.

The spelling of 371667421 in words is "three hundred seventy-one million, six hundred sixty-seven thousand, four hundred twenty-one".