40143652 has 12 divisors (see below), whose sum is σ = 70717696. Its totient is φ = 19938600.

The previous prime is 40143641. The next prime is 40143661. The reversal of 40143652 is 25634104.

It is a super-2 number, since 2×40143652² = 3223025591794208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32628 + ... + 33835.

Almost surely, 2^40143652 is an apocalyptic number.

It is an amenable number.

40143652 is a deficient number, since it is larger than the sum of its proper divisors (30574044).

40143652 is a wasteful number, since it uses less digits than its factorization.

40143652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66618 (or 66616 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40143652 is about 6335.9018300476. The cubic root of 40143652 is about 342.4041026563.

Adding to 40143652 its reverse (25634104), we get a palindrome (65777756).

The spelling of 40143652 in words is "forty million, one hundred forty-three thousand, six hundred fifty-two".