11401423420 has 24 divisors (see below), whose sum is σ = 23946711264. Its totient is φ = 4559860416.

The previous prime is 11401423379. The next prime is 11401423427. The reversal of 11401423420 is 2432410411.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11401423391 and 11401423400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401423427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98842 + ... + 180478.

It is an arithmetic number, because the mean of its divisors is an integer number (997779636).

Almost surely, 2^11401423420 is an apocalyptic number.

11401423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401423420 is an abundant number, since it is smaller than the sum of its proper divisors (12545287844).

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

11401423420 is a wasteful number, since it uses less digits than its factorization.

11401423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88629 (or 88627 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11401423420 its reverse (2432410411), we get a palindrome (13833833831).

The spelling of 11401423420 in words is "eleven billion, four hundred one million, four hundred twenty-three thousand, four hundred twenty".