40253043 has 4 divisors (see below), whose sum is σ = 53670728. Its totient is φ = 26835360.

The previous prime is 40253033. The next prime is 40253047. The reversal of 40253043 is 34035204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40253043 - 2⁴ = 40253027 is a prime.

It is a super-3 number, since 3×40253043³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40253047) 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, 6708838 + ... + 6708843.

It is an arithmetic number, because the mean of its divisors is an integer number (13417682).

Almost surely, 2^40253043 is an apocalyptic number.

40253043 is a deficient number, since it is larger than the sum of its proper divisors (13417685).

40253043 is a wasteful number, since it uses less digits than its factorization.

40253043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417684.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40253043 is about 6344.5285876888. The cubic root of 40253043 is about 342.7148363541.

Adding to 40253043 its reverse (34035204), we get a palindrome (74288247).

The spelling of 40253043 in words is "forty million, two hundred fifty-three thousand, forty-three".