40143412 has 6 divisors (see below), whose sum is σ = 70250978. Its totient is φ = 20071704.

The previous prime is 40143403. The next prime is 40143437. The reversal of 40143412 is 21434104.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 1653796 = 6204^2 + 1286^2 .

It is a super-2 number, since 2×40143412² = 3222987054003488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40143412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017923 + ... + 5017930.

Almost surely, 2^40143412 is an apocalyptic number.

It is an amenable number.

40143412 is a deficient number, since it is larger than the sum of its proper divisors (30107566).

40143412 is a wasteful number, since it uses less digits than its factorization.

40143412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035857 (or 10035855 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40143412 is about 6335.8828903319. The cubic root of 40143412 is about 342.4034202973.

Adding to 40143412 its reverse (21434104), we get a palindrome (61577516).

The spelling of 40143412 in words is "forty million, one hundred forty-three thousand, four hundred twelve".