1113456421 has 32 divisors (see below), whose sum is σ = 1450586880. Its totient is φ = 829248000.

The previous prime is 1113456413. The next prime is 1113456431. The reversal of 1113456421 is 1246543111.

It is not a de Polignac number, because 1113456421 - 2³ = 1113456413 is a prime.

It is a super-2 number, since 2×1113456421² = 2479570402932258482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1113456421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113456401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223065 + ... + 228001.

It is an arithmetic number, because the mean of its divisors is an integer number (45330840).

Almost surely, 2^1113456421 is an apocalyptic number.

1113456421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1113456421 is a deficient number, since it is larger than the sum of its proper divisors (337130459).

1113456421 is a wasteful number, since it uses less digits than its factorization.

1113456421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085.

The product of its digits is 2880, while the sum is 28.

The square root of 1113456421 is about 33368.4944371184. The cubic root of 1113456421 is about 1036.4723988261.

Adding to 1113456421 its reverse (1246543111), we get a palindrome (2359999532).

The spelling of 1113456421 in words is "one billion, one hundred thirteen million, four hundred fifty-six thousand, four hundred twenty-one".