40143030 has 16 divisors (see below), whose sum is σ = 96343344. Its totient is φ = 10704800.

The previous prime is 40143017. The next prime is 40143041. The reversal of 40143030 is 3034104.

It is a super-2 number, since 2×40143030² = 3222925715161800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 669021 + ... + 669080.

It is an arithmetic number, because the mean of its divisors is an integer number (6021459).

Almost surely, 2^40143030 is an apocalyptic number.

40143030 is an abundant number, since it is smaller than the sum of its proper divisors (56200314).

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

40143030 is a wasteful number, since it uses less digits than its factorization.

40143030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338111.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40143030 is about 6335.8527445009. The cubic root of 40143030 is about 342.4023342036.

Adding to 40143030 its reverse (3034104), we get a palindrome (43177134).

The spelling of 40143030 in words is "forty million, one hundred forty-three thousand, thirty".