37420421 has 4 divisors (see below), whose sum is σ = 37522752. Its totient is φ = 37318092.

The previous prime is 37420403. The next prime is 37420459. The reversal of 37420421 is 12402473.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12402473 = 137 ⋅90529.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37420421 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 (37420021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50615 + ... + 51348.

It is an arithmetic number, because the mean of its divisors is an integer number (9380688).

Almost surely, 2^37420421 is an apocalyptic number.

It is an amenable number.

37420421 is a deficient number, since it is larger than the sum of its proper divisors (102331).

37420421 is a wasteful number, since it uses less digits than its factorization.

37420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102330.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 37420421 is about 6117.2233080050. The cubic root of 37420421 is about 334.4795393400.

Adding to 37420421 its reverse (12402473), we get a palindrome (49822894).

The spelling of 37420421 in words is "thirty-seven million, four hundred twenty thousand, four hundred twenty-one".