421012 has 6 divisors (see below), whose sum is σ = 736778. Its totient is φ = 210504.

The previous prime is 421009. The next prime is 421019. The reversal of 421012 is 210124.

It can be written as a sum of positive squares in only one way, i.e., 264196 + 156816 = 514^2 + 396^2 .

It is a super-2 number, since 2×421012² = 354502208288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52623 + ... + 52630.

2⁴²¹⁰¹² is an apocalyptic number.

It is an amenable number.

421012 is a deficient number, since it is larger than the sum of its proper divisors (315766).

421012 is a wasteful number, since it uses less digits than its factorization.

421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105257 (or 105255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 421012 is about 648.8543750334. The cubic root of 421012 is about 74.9488243479.

Adding to 421012 its reverse (210124), we get a palindrome (631136).

It can be divided in two parts, 4 and 21012, that multiplied together give a palindrome (84048).

The spelling of 421012 in words is "four hundred twenty-one thousand, twelve", and thus it is an iban number.