420400240043 has 16 divisors (see below), whose sum is σ = 483668802240. Its totient is φ = 357938269056.

The previous prime is 420400240027. The next prime is 420400240081. The reversal of 420400240043 is 340042004024.

It is a cyclic number.

It is not a de Polignac number, because 420400240043 - 2⁴ = 420400240027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420400240003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197293 + ... + 1508081.

It is an arithmetic number, because the mean of its divisors is an integer number (30229300140).

Almost surely, 2^420400240043 is an apocalyptic number.

420400240043 is a deficient number, since it is larger than the sum of its proper divisors (63268562197).

420400240043 is a wasteful number, since it uses less digits than its factorization.

420400240043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312086.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 420400240043 its reverse (340042004024), we get a palindrome (760442244067).

The spelling of 420400240043 in words is "four hundred twenty billion, four hundred million, two hundred forty thousand, forty-three".