40143674 has 8 divisors (see below), whose sum is σ = 61684308. Its totient is φ = 19582240.

The previous prime is 40143661. The next prime is 40143679. The reversal of 40143674 is 47634104.

It can be written as a sum of positive squares in 2 ways, for example, as 40132225 + 11449 = 6335^2 + 107^2 .

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

It is a super-2 number, since 2×40143674² = 3223029124436552, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40143679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244697 + ... + 244860.

Almost surely, 2^40143674 is an apocalyptic number.

40143674 is a deficient number, since it is larger than the sum of its proper divisors (21540634).

40143674 is a wasteful number, since it uses less digits than its factorization.

40143674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489600.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40143674 is about 6335.9035661853. The cubic root of 40143674 is about 342.4041652058.

Adding to 40143674 its reverse (47634104), we get a palindrome (87777778).

The spelling of 40143674 in words is "forty million, one hundred forty-three thousand, six hundred seventy-four".