61742045 has 8 divisors (see below), whose sum is σ = 78448824. Its totient is φ = 46488064.

The previous prime is 61742033. The next prime is 61742047. The reversal of 61742045 is 54024716.

It can be written as a sum of positive squares in 4 ways, for example, as 605284 + 61136761 = 778^2 + 7819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61742045 - 2⁴ = 61742029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61741999 and 61742017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61742047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363104 + ... + 363273.

It is an arithmetic number, because the mean of its divisors is an integer number (9806103).

Almost surely, 2^61742045 is an apocalyptic number.

It is an amenable number.

61742045 is a deficient number, since it is larger than the sum of its proper divisors (16706779).

61742045 is a wasteful number, since it uses less digits than its factorization.

61742045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726399.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 61742045 is about 7857.6106419191. The cubic root of 61742045 is about 395.2394958430.

The spelling of 61742045 in words is "sixty-one million, seven hundred forty-two thousand, forty-five".