43020156240 has 140 divisors (see below), whose sum is σ = 149964396084. Its totient is φ = 11472026112.

The previous prime is 43020156199. The next prime is 43020156251. The reversal of 43020156240 is 4265102034.

43020156240 is a `hidden beast` number, since 4 + 3 + 0 + 20 + 15 + 624 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29339578944 + 13680577296 = 171288^2 + 116964^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 310509 + ... + 427148.

Almost surely, 2^43020156240 is an apocalyptic number.

43020156240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43020156240 is an abundant number, since it is smaller than the sum of its proper divisors (106944239844).

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

43020156240 is an equidigital number, since it uses as much as digits as its factorization.

43020156240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737688 (or 737667 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 43020156240 its reverse (4265102034), we get a palindrome (47285258274).

The spelling of 43020156240 in words is "forty-three billion, twenty million, one hundred fifty-six thousand, two hundred forty".