61994123 has 2 divisors, whose sum is σ = 61994124. Its totient is φ = 61994122.

The previous prime is 61994071. The next prime is 61994171. The reversal of 61994123 is 32149916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61994123 - 2⁶ = 61994059 is a prime.

It is not a weakly prime, because it can be changed into another prime (61994423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30997061 + 30997062.

It is an arithmetic number, because the mean of its divisors is an integer number (30997062).

Almost surely, 2^61994123 is an apocalyptic number.

61994123 is a deficient number, since it is larger than the sum of its proper divisors (1).

61994123 is an equidigital number, since it uses as much as digits as its factorization.

61994123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 61994123 is about 7873.6346752945. The cubic root of 61994123 is about 395.7766549121.

The spelling of 61994123 in words is "sixty-one million, nine hundred ninety-four thousand, one hundred twenty-three".