40430111421 has 16 divisors (see below), whose sum is σ = 61641494528. Its totient is φ = 23090281200.

The previous prime is 40430111389. The next prime is 40430111431. The reversal of 40430111421 is 12411103404.

It is not a de Polignac number, because 40430111421 - 2⁵ = 40430111389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430111431) 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 15 ways as a sum of consecutive naturals, for example, 487285 + ... + 564186.

It is an arithmetic number, because the mean of its divisors is an integer number (3852593408).

Almost surely, 2^40430111421 is an apocalyptic number.

It is an amenable number.

40430111421 is a deficient number, since it is larger than the sum of its proper divisors (21211383107).

40430111421 is a wasteful number, since it uses less digits than its factorization.

40430111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053312.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 40430111421 its reverse (12411103404), we get a palindrome (52841214825).

The spelling of 40430111421 in words is "forty billion, four hundred thirty million, one hundred eleven thousand, four hundred twenty-one".