421434554 has 16 divisors (see below), whose sum is σ = 688370400. Its totient is φ = 192742704.

The previous prime is 421434547. The next prime is 421434569. The reversal of 421434554 is 455434124.

It is a self number, because there is not a number n which added to its sum of digits gives 421434554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190112 + ... + 192315.

It is an arithmetic number, because the mean of its divisors is an integer number (43023150).

Almost surely, 2^421434554 is an apocalyptic number.

421434554 is a deficient number, since it is larger than the sum of its proper divisors (266935846).

421434554 is a wasteful number, since it uses less digits than its factorization.

421434554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382477.

The product of its digits is 38400, while the sum is 32.

The square root of 421434554 is about 20528.8712305377. The cubic root of 421434554 is about 749.7389040787.

Adding to 421434554 its reverse (455434124), we get a palindrome (876868678).

The spelling of 421434554 in words is "four hundred twenty-one million, four hundred thirty-four thousand, five hundred fifty-four".