4111661142 has 64 divisors (see below), whose sum is σ = 9636192000. Its totient is φ = 1295953344.

The previous prime is 4111661129. The next prime is 4111661143. The reversal of 4111661142 is 2411661114.

4111661142 is a `hidden beast` number, since 4 + 1 + 1 + 1 + 6 + 611 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4111661143) 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 31 ways as a sum of consecutive naturals, for example, 580273 + ... + 587315.

It is an arithmetic number, because the mean of its divisors is an integer number (150565500).

Almost surely, 2^4111661142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4111661142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4818096000).

4111661142 is an abundant number, since it is smaller than the sum of its proper divisors (5524530858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4111661142 is a wasteful number, since it uses less digits than its factorization.

4111661142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642 (or 7636 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 4111661142 is about 64122.2359404287. The cubic root of 4111661142 is about 1602.0366177157.

The spelling of 4111661142 in words is "four billion, one hundred eleven million, six hundred sixty-one thousand, one hundred forty-two".