43254423040 has 80 divisors (see below), whose sum is σ = 103936079808. Its totient is φ = 17263927296.

The previous prime is 43254423029. The next prime is 43254423049. The reversal of 43254423040 is 4032445234.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×43254423040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43254422993 and 43254423011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43254423049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167034 + ... + 1203526.

Almost surely, 2^43254423040 is an apocalyptic number.

43254423040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43254423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51968039904).

43254423040 is an abundant number, since it is smaller than the sum of its proper divisors (60681656768).

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

43254423040 is an equidigital number, since it uses as much as digits as its factorization.

43254423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36979 (or 36963 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 43254423040 its reverse (4032445234), we get a palindrome (47286868274).

The spelling of 43254423040 in words is "forty-three billion, two hundred fifty-four million, four hundred twenty-three thousand, forty".