61242305 has 4 divisors (see below), whose sum is σ = 73490772. Its totient is φ = 48993840.

The previous prime is 61242281. The next prime is 61242317. The reversal of 61242305 is 50324216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17774656 + 43467649 = 4216^2 + 6593^2 .

It is not a de Polignac number, because 61242305 - 2⁶ = 61242241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6124226 + ... + 6124235.

It is an arithmetic number, because the mean of its divisors is an integer number (18372693).

Almost surely, 2^61242305 is an apocalyptic number.

It is an amenable number.

61242305 is a deficient number, since it is larger than the sum of its proper divisors (12248467).

61242305 is a wasteful number, since it uses less digits than its factorization.

61242305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12248466.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61242305 is about 7825.7462902908. The cubic root of 61242305 is about 394.1702498878.

The spelling of 61242305 in words is "sixty-one million, two hundred forty-two thousand, three hundred five".