37942021 has 12 divisors (see below), whose sum is σ = 41267232. Its totient is φ = 34868496.

The previous prime is 37942001. The next prime is 37942043. The reversal of 37942021 is 12024973.

It is not a de Polignac number, because 37942021 - 2⁵ = 37941989 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 (37942001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58320 + ... + 58966.

It is an arithmetic number, because the mean of its divisors is an integer number (3438936).

Almost surely, 2^37942021 is an apocalyptic number.

It is an amenable number.

37942021 is a deficient number, since it is larger than the sum of its proper divisors (3325211).

37942021 is a wasteful number, since it uses less digits than its factorization.

37942021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 37942021 is about 6159.7094899029. The cubic root of 37942021 is about 336.0264677043.

Adding to 37942021 its reverse (12024973), we get a palindrome (49966994).

The spelling of 37942021 in words is "thirty-seven million, nine hundred forty-two thousand, twenty-one".