61142018 has 16 divisors (see below), whose sum is σ = 107046144. Its totient is φ = 25645920.

The previous prime is 61142017. The next prime is 61142077. The reversal of 61142018 is 81024116.

It is a super-2 number, since 2×61142018² = 7476692730224648, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61141984 and 61142002.

It is not an unprimeable number, because it can be changed into a prime (61142017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45803 + ... + 47118.

It is an arithmetic number, because the mean of its divisors is an integer number (6690384).

Almost surely, 2^61142018 is an apocalyptic number.

61142018 is a deficient number, since it is larger than the sum of its proper divisors (45904126).

61142018 is a wasteful number, since it uses less digits than its factorization.

61142018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92977.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 61142018 is about 7819.3361610817. The cubic root of 61142018 is about 393.9549752289.

The spelling of 61142018 in words is "sixty-one million, one hundred forty-two thousand, eighteen".