40143061 has 8 divisors (see below), whose sum is σ = 46208960. Its totient is φ = 34159968.

The previous prime is 40143041. The next prime is 40143079. The reversal of 40143061 is 16034104.

It is a happy number.

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 40143061 - 2⁹ = 40142549 is a prime.

It is a super-2 number, since 2×40143061² = 3222930692899442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143011) 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, 19656 + ... + 21601.

It is an arithmetic number, because the mean of its divisors is an integer number (5776120).

Almost surely, 2^40143061 is an apocalyptic number.

It is an amenable number.

40143061 is a deficient number, since it is larger than the sum of its proper divisors (6065899).

40143061 is a wasteful number, since it uses less digits than its factorization.

40143061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41403.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40143061 is about 6335.8551908957. The cubic root of 40143061 is about 342.4024223423.

Adding to 40143061 its reverse (16034104), we get a palindrome (56177165).

The spelling of 40143061 in words is "forty million, one hundred forty-three thousand, sixty-one".