421021096 has 8 divisors (see below), whose sum is σ = 789414570. Its totient is φ = 210510544.

The previous prime is 421021093. The next prime is 421021103. The reversal of 421021096 is 690120124.

It can be written as a sum of positive squares in only one way, i.e., 300328900 + 120692196 = 17330^2 + 10986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×421021096³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421021096.

It is not an unprimeable number, because it can be changed into a prime (421021093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26313811 + ... + 26313826.

Almost surely, 2^421021096 is an apocalyptic number.

It is an amenable number.

421021096 is a deficient number, since it is larger than the sum of its proper divisors (368393474).

421021096 is a wasteful number, since it uses less digits than its factorization.

421021096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52627643 (or 52627639 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 421021096 is about 20518.7986003080. The cubic root of 421021096 is about 749.4936410259.

The spelling of 421021096 in words is "four hundred twenty-one million, twenty-one thousand, ninety-six".