37442421 has 6 divisors (see below), whose sum is σ = 54083510. Its totient is φ = 24961608.

The previous prime is 37442387. The next prime is 37442429. The reversal of 37442421 is 12424473.

It can be written as a sum of positive squares in only one way, i.e., 37271025 + 171396 = 6105^2 + 414^2 .

It is not a de Polignac number, because 37442421 - 2⁹ = 37441909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37442429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2080126 + ... + 2080143.

Almost surely, 2^37442421 is an apocalyptic number.

It is an amenable number.

37442421 is a deficient number, since it is larger than the sum of its proper divisors (16641089).

37442421 is a wasteful number, since it uses less digits than its factorization.

37442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160275 (or 4160272 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 37442421 is about 6119.0212452646. The cubic root of 37442421 is about 334.5450749315.

Adding to 37442421 its reverse (12424473), we get a palindrome (49866894).

The spelling of 37442421 in words is "thirty-seven million, four hundred forty-two thousand, four hundred twenty-one".