1113451421 has 4 divisors (see below), whose sum is σ = 1119672000. Its totient is φ = 1107230844.

The previous prime is 1113451411. The next prime is 1113451429. The reversal of 1113451421 is 1241543111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1113451421 - 2²² = 1109257117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113451429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3110021 + ... + 3110378.

It is an arithmetic number, because the mean of its divisors is an integer number (279918000).

Almost surely, 2^1113451421 is an apocalyptic number.

It is an amenable number.

1113451421 is a deficient number, since it is larger than the sum of its proper divisors (6220579).

1113451421 is an equidigital number, since it uses as much as digits as its factorization.

1113451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220578.

The product of its digits is 480, while the sum is 23.

The square root of 1113451421 is about 33368.4195160634. The cubic root of 1113451421 is about 1036.4708473899.

Adding to 1113451421 its reverse (1241543111), we get a palindrome (2354994532).

The spelling of 1113451421 in words is "one billion, one hundred thirteen million, four hundred fifty-one thousand, four hundred twenty-one".