421081026 has 32 divisors (see below), whose sum is σ = 863193408. Its totient is φ = 136866240.

The previous prime is 421080991. The next prime is 421081027. The reversal of 421081026 is 620180124.

It is a junction number, because it is equal to n+sod(n) for n = 421080987 and 421081005.

It is not an unprimeable number, because it can be changed into a prime (421081027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225336 + ... + 227196.

It is an arithmetic number, because the mean of its divisors is an integer number (26974794).

Almost surely, 2^421081026 is an apocalyptic number.

421081026 is an abundant number, since it is smaller than the sum of its proper divisors (442112382).

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

421081026 is a wasteful number, since it uses less digits than its factorization.

421081026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 421081026 is about 20520.2589164952. The cubic root of 421081026 is about 749.5292014157.

It can be divided in two parts, 42108 and 1026, that added together give a palindrome (43134).

The spelling of 421081026 in words is "four hundred twenty-one million, eighty-one thousand, twenty-six".