37120421 has 8 divisors (see below), whose sum is σ = 40094040. Its totient is φ = 34163712.

The previous prime is 37120409. The next prime is 37120439. The reversal of 37120421 is 12402173.

37120421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1288225 + 35832196 = 1135^2 + 5986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37120421 - 2¹⁸ = 36858277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37120393 and 37120402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37110421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545 + ... + 8633.

It is an arithmetic number, because the mean of its divisors is an integer number (5011755).

Almost surely, 2^37120421 is an apocalyptic number.

It is an amenable number.

37120421 is a deficient number, since it is larger than the sum of its proper divisors (2973619).

37120421 is a wasteful number, since it uses less digits than its factorization.

37120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8455.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 37120421 is about 6092.6530345983. The cubic root of 37120421 is about 333.5832977288.

Adding to 37120421 its reverse (12402173), we get a palindrome (49522594).

The spelling of 37120421 in words is "thirty-seven million, one hundred twenty thousand, four hundred twenty-one".