61142735 has 8 divisors (see below), whose sum is σ = 73496976. Its totient is φ = 48830400.

The previous prime is 61142713. The next prime is 61142737. The reversal of 61142735 is 53724116.

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

It is not a de Polignac number, because 61142735 - 2⁸ = 61142479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61142698 and 61142707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61142737) 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, 7169 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (9187122).

Almost surely, 2^61142735 is an apocalyptic number.

61142735 is a deficient number, since it is larger than the sum of its proper divisors (12354241).

61142735 is a wasteful number, since it uses less digits than its factorization.

61142735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20953.

The product of its digits is 5040, while the sum is 29.

The square root of 61142735 is about 7819.3820088291. The cubic root of 61142735 is about 393.9565151662.

The spelling of 61142735 in words is "sixty-one million, one hundred forty-two thousand, seven hundred thirty-five".