420034021043 has 64 divisors (see below), whose sum is σ = 554560204800. Its totient is φ = 308992983552.

The previous prime is 420034021037. The next prime is 420034021049. The reversal of 420034021043 is 340120430024.

It is an interprime number because it is at equal distance from previous prime (420034021037) and next prime (420034021049).

It is a cyclic number.

It is not a de Polignac number, because 420034021043 - 2⁸ = 420034020787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (420034021049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108338021 + ... + 108341897.

It is an arithmetic number, because the mean of its divisors is an integer number (8665003200).

Almost surely, 2^420034021043 is an apocalyptic number.

420034021043 is a deficient number, since it is larger than the sum of its proper divisors (134526183757).

420034021043 is a wasteful number, since it uses less digits than its factorization.

420034021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 420034021043 its reverse (340120430024), we get a palindrome (760154451067).

The spelling of 420034021043 in words is "four hundred twenty billion, thirty-four million, twenty-one thousand, forty-three".