1237961 has 2 divisors, whose sum is σ = 1237962. Its totient is φ = 1237960.

The previous prime is 1237949. The next prime is 1237963. The reversal of 1237961 is 1697321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712336 + 525625 = 844^2 + 725^2 .

It is an emirp because it is prime and its reverse (1697321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1237961 - 2⁶ = 1237897 is a prime.

Together with 1237963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1237963) 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, 618980 + 618981.

It is an arithmetic number, because the mean of its divisors is an integer number (618981).

2^1237961 is an apocalyptic number.

It is an amenable number.

1237961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1237961 is an equidigital number, since it uses as much as digits as its factorization.

1237961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 1237961 is about 1112.6369578618. The cubic root of 1237961 is about 107.3747884140.

It can be divided in two parts, 12 and 37961, that added together give a palindrome (37973).

The spelling of 1237961 in words is "one million, two hundred thirty-seven thousand, nine hundred sixty-one".