40043430124213 has 4 divisors (see below), whose sum is σ = 40044262347360. Its totient is φ = 40042597901068.

The previous prime is 40043430124207. The next prime is 40043430124277. The reversal of 40043430124213 is 31242103434004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40043430124213 - 2¹³ = 40043430116021 is a prime.

It is a super-2 number, since 2×40043430124213² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043430124283) 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, 416039395 + ... + 416135632.

It is an arithmetic number, because the mean of its divisors is an integer number (10011065586840).

Almost surely, 2^{40043430124213} is an apocalyptic number.

It is an amenable number.

40043430124213 is a deficient number, since it is larger than the sum of its proper divisors (832223147).

40043430124213 is an equidigital number, since it uses as much as digits as its factorization.

40043430124213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832223146.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 40043430124213 its reverse (31242103434004), we get a palindrome (71285533558217).

Subtracting from 40043430124213 its reverse (31242103434004), we obtain a square (8801326690209 = 2966703²).

The spelling of 40043430124213 in words is "forty trillion, forty-three billion, four hundred thirty million, one hundred twenty-four thousand, two hundred thirteen".