61242133 has 2 divisors, whose sum is σ = 61242134. Its totient is φ = 61242132.

The previous prime is 61242119. The next prime is 61242161. The reversal of 61242133 is 33124216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41899729 + 19342404 = 6473^2 + 4398^2 .

It is a cyclic number.

It is not a de Polignac number, because 61242133 - 2⁵ = 61242101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61242193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30621066 + 30621067.

It is an arithmetic number, because the mean of its divisors is an integer number (30621067).

Almost surely, 2^61242133 is an apocalyptic number.

It is an amenable number.

61242133 is a deficient number, since it is larger than the sum of its proper divisors (1).

61242133 is an equidigital number, since it uses as much as digits as its factorization.

61242133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 61242133 is about 7825.7353009158. The cubic root of 61242133 is about 394.1698808763.

Adding to 61242133 its reverse (33124216), we get a palindrome (94366349).

It can be divided in two parts, 6124213 and 3, that added together give a palindrome (6124216).

The spelling of 61242133 in words is "sixty-one million, two hundred forty-two thousand, one hundred thirty-three".