421043420522 has 32 divisors (see below), whose sum is σ = 666082384704. Its totient is φ = 199355990400.

The previous prime is 421043420509. The next prime is 421043420533. The reversal of 421043420522 is 225024340124.

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, 658697 + ... + 1129587.

It is an arithmetic number, because the mean of its divisors is an integer number (20815074522).

Almost surely, 2^421043420522 is an apocalyptic number.

421043420522 is a deficient number, since it is larger than the sum of its proper divisors (245038964182).

421043420522 is a wasteful number, since it uses less digits than its factorization.

421043420522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471254.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 421043420522 its reverse (225024340124), we get a palindrome (646067760646).

The spelling of 421043420522 in words is "four hundred twenty-one billion, forty-three million, four hundred twenty thousand, five hundred twenty-two".