4176421 has 2 divisors, whose sum is σ = 4176422. Its totient is φ = 4176420.

The previous prime is 4176397. The next prime is 4176443. The reversal of 4176421 is 1246714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 236196 = 1985^2 + 486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4176421 is a prime.

4176421 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4176521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2088210 + 2088211.

It is an arithmetic number, because the mean of its divisors is an integer number (2088211).

Almost surely, 2^4176421 is an apocalyptic number.

It is an amenable number.

4176421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4176421 is an equidigital number, since it uses as much as digits as its factorization.

4176421 is an evil number, because the sum of its binary digits is even.

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

The square root of 4176421 is about 2043.6293695286. The cubic root of 4176421 is about 161.0403689777.

The spelling of 4176421 in words is "four million, one hundred seventy-six thousand, four hundred twenty-one".