421321134 has 16 divisors (see below), whose sum is σ = 907461072. Its totient is φ = 129637248.

The previous prime is 421321133. The next prime is 421321139. The reversal of 421321134 is 431123124.

It is a super-2 number, since 2×421321134² = 355022995910091912, 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 421321134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421321133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700699 + ... + 2700854.

It is an arithmetic number, because the mean of its divisors is an integer number (56716317).

Almost surely, 2^421321134 is an apocalyptic number.

421321134 is an abundant number, since it is smaller than the sum of its proper divisors (486139938).

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

421321134 is a wasteful number, since it uses less digits than its factorization.

421321134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401571.

The product of its digits is 576, while the sum is 21.

The square root of 421321134 is about 20526.1085936911. The cubic root of 421321134 is about 749.6716393712.

Adding to 421321134 its reverse (431123124), we get a palindrome (852444258).

The spelling of 421321134 in words is "four hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty-four".