61742145 has 8 divisors (see below), whose sum is σ = 98787456. Its totient is φ = 32929136.

The previous prime is 61742141. The next prime is 61742167. The reversal of 61742145 is 54124716.

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

It is a cyclic number.

It is not a de Polignac number, because 61742145 - 2² = 61742141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61742141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058057 + ... + 2058086.

It is an arithmetic number, because the mean of its divisors is an integer number (12348432).

Almost surely, 2^61742145 is an apocalyptic number.

It is an amenable number.

61742145 is a deficient number, since it is larger than the sum of its proper divisors (37045311).

61742145 is a wasteful number, since it uses less digits than its factorization.

61742145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116151.

The product of its digits is 6720, while the sum is 30.

The square root of 61742145 is about 7857.6170051740. The cubic root of 61742145 is about 395.2397092251.

The spelling of 61742145 in words is "sixty-one million, seven hundred forty-two thousand, one hundred forty-five".