421341544243042 has 32 divisors (see below), whose sum is σ = 651096939732480. Its totient is φ = 204344455328640.

The previous prime is 421341544243019. The next prime is 421341544243093. The reversal of 421341544243042 is 240342445143124.

It is a super-2 number, since 2×421341544243042² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421341544243042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382707934 + ... + 383807302.

It is an arithmetic number, because the mean of its divisors is an integer number (20346779366640).

Almost surely, 2^{421341544243042} is an apocalyptic number.

421341544243042 is a deficient number, since it is larger than the sum of its proper divisors (229755395489438).

421341544243042 is a wasteful number, since it uses less digits than its factorization.

421341544243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115386.

The product of its (nonzero) digits is 1474560, while the sum is 43.

Adding to 421341544243042 its reverse (240342445143124), we get a palindrome (661683989386166).

The spelling of 421341544243042 in words is "four hundred twenty-one trillion, three hundred forty-one billion, five hundred forty-four million, two hundred forty-three thousand, forty-two".