37230421 has 2 divisors, whose sum is σ = 37230422. Its totient is φ = 37230420.

The previous prime is 37230377. The next prime is 37230451. The reversal of 37230421 is 12403273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31203396 + 6027025 = 5586^2 + 2455^2 .

It is an emirp because it is prime and its reverse (12403273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37230421 - 2¹⁵ = 37197653 is a prime.

It is a super-2 number, since 2×37230421² = 2772208495674482, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 37230392 and 37230401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37230451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18615210 + 18615211.

It is an arithmetic number, because the mean of its divisors is an integer number (18615211).

Almost surely, 2^37230421 is an apocalyptic number.

It is an amenable number.

37230421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37230421 is an equidigital number, since it uses as much as digits as its factorization.

37230421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 37230421 is about 6101.6736228677. The cubic root of 37230421 is about 333.9124784124.

Adding to 37230421 its reverse (12403273), we get a palindrome (49633694).

The spelling of 37230421 in words is "thirty-seven million, two hundred thirty thousand, four hundred twenty-one".