421026043 has 4 divisors (see below), whose sum is σ = 422086960. Its totient is φ = 419965128.

The previous prime is 421025999. The next prime is 421026059. The reversal of 421026043 is 340620124.

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 421026043 - 2⁹ = 421025531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421026083) 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, 529863 + ... + 530656.

It is an arithmetic number, because the mean of its divisors is an integer number (105521740).

Almost surely, 2^421026043 is an apocalyptic number.

421026043 is a deficient number, since it is larger than the sum of its proper divisors (1060917).

421026043 is a wasteful number, since it uses less digits than its factorization.

421026043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060916.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 421026043 is about 20518.9191479473. The cubic root of 421026043 is about 749.4965765324.

Adding to 421026043 its reverse (340620124), we get a palindrome (761646167).

The spelling of 421026043 in words is "four hundred twenty-one million, twenty-six thousand, forty-three".