40420002243043 has 4 divisors (see below), whose sum is σ = 40420076006128. Its totient is φ = 40419928479960.

The previous prime is 40420002243017. The next prime is 40420002243083. The reversal of 40420002243043 is 34034220002404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40420002243043 - 2⁴⁵ = 5235630154211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40420002243083) 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, 36053388 + ... + 37157593.

It is an arithmetic number, because the mean of its divisors is an integer number (10105019001532).

Almost surely, 2^{40420002243043} is an apocalyptic number.

40420002243043 is a deficient number, since it is larger than the sum of its proper divisors (73763085).

40420002243043 is an equidigital number, since it uses as much as digits as its factorization.

40420002243043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73763084.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 40420002243043 its reverse (34034220002404), we get a palindrome (74454222245447).

The spelling of 40420002243043 in words is "forty trillion, four hundred twenty billion, two million, two hundred forty-three thousand, forty-three".