37426421 has 2 divisors, whose sum is σ = 37426422. Its totient is φ = 37426420.

The previous prime is 37426397. The next prime is 37426453. The reversal of 37426421 is 12462473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 4363921 = 5750^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 37426421 - 2²² = 33232117 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37426121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18713210 + 18713211.

It is an arithmetic number, because the mean of its divisors is an integer number (18713211).

Almost surely, 2^37426421 is an apocalyptic number.

It is an amenable number.

37426421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37426421 is an equidigital number, since it uses as much as digits as its factorization.

37426421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 37426421 is about 6117.7137069333. The cubic root of 37426421 is about 334.4974152299.

Adding to 37426421 its reverse (12462473), we get a palindrome (49888894).

The spelling of 37426421 in words is "thirty-seven million, four hundred twenty-six thousand, four hundred twenty-one".