37143121 has 2 divisors, whose sum is σ = 37143122. Its totient is φ = 37143120.

The previous prime is 37143107. The next prime is 37143179. The reversal of 37143121 is 12134173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24611521 + 12531600 = 4961^2 + 3540^2 .

It is an emirp because it is prime and its reverse (12134173) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37143121 is a prime.

It is a super-2 number, since 2×37143121² = 2759222875241282, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 37143092 and 37143101.

It is not a weakly prime, because it can be changed into another prime (37153121) 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 as a sum of consecutive naturals, namely, 18571560 + 18571561.

It is an arithmetic number, because the mean of its divisors is an integer number (18571561).

Almost surely, 2^37143121 is an apocalyptic number.

It is an amenable number.

37143121 is a deficient number, since it is larger than the sum of its proper divisors (1).

37143121 is an equidigital number, since it uses as much as digits as its factorization.

37143121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 37143121 is about 6094.5156493359. The cubic root of 37143121 is about 333.6512818520.

Adding to 37143121 its reverse (12134173), we get a palindrome (49277294).

The spelling of 37143121 in words is "thirty-seven million, one hundred forty-three thousand, one hundred twenty-one".