121042237 has 2 divisors, whose sum is σ = 121042238. Its totient is φ = 121042236.

The previous prime is 121042231. The next prime is 121042241. The reversal of 121042237 is 732240121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116402521 + 4639716 = 10789^2 + 2154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121042237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121042231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60521118 + 60521119.

It is an arithmetic number, because the mean of its divisors is an integer number (60521119).

Almost surely, 2^121042237 is an apocalyptic number.

It is an amenable number.

121042237 is a deficient number, since it is larger than the sum of its proper divisors (1).

121042237 is an equidigital number, since it uses as much as digits as its factorization.

121042237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 121042237 is about 11001.9196961258. The cubic root of 121042237 is about 494.6662880143. Note that the first 3 decimals are identical.

Adding to 121042237 its reverse (732240121), we get a palindrome (853282358).

It can be divided in two parts, 12104 and 2237, that added together give a palindrome (14341).

The spelling of 121042237 in words is "one hundred twenty-one million, forty-two thousand, two hundred thirty-seven".