40135743 has 20 divisors (see below), whose sum is σ = 60946248. Its totient is φ = 26315280.

The previous prime is 40135741. The next prime is 40135769. The reversal of 40135743 is 34753104.

It is not a de Polignac number, because 40135743 - 2¹ = 40135741 is a prime.

It is a super-2 number, since 2×40135743² = 3221755732324098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135741) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 880 + ... + 9002.

Almost surely, 2^40135743 is an apocalyptic number.

40135743 is a deficient number, since it is larger than the sum of its proper divisors (20810505).

40135743 is an equidigital number, since it uses as much as digits as its factorization.

40135743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196 (or 8187 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 40135743 is about 6335.2776576879. The cubic root of 40135743 is about 342.3816146515.

Adding to 40135743 its reverse (34753104), we get a palindrome (74888847).

The spelling of 40135743 in words is "forty million, one hundred thirty-five thousand, seven hundred forty-three".