421042044 has 12 divisors (see below), whose sum is σ = 982431464. Its totient is φ = 140347344.

The previous prime is 421041977. The next prime is 421042049. The reversal of 421042044 is 440240124.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 421042044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042049) 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, 17543407 + ... + 17543430.

Almost surely, 2^421042044 is an apocalyptic number.

It is an amenable number.

421042044 is an abundant number, since it is smaller than the sum of its proper divisors (561389420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421042044 is a wasteful number, since it uses less digits than its factorization.

421042044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35086844 (or 35086842 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 421042044 is about 20519.3090526947. The cubic root of 421042044 is about 749.5060712283.

Adding to 421042044 its reverse (440240124), we get a palindrome (861282168).

The spelling of 421042044 in words is "four hundred twenty-one million, forty-two thousand, forty-four".