1220140043 has 16 divisors (see below), whose sum is σ = 1296192000. Its totient is φ = 1145327040.

The previous prime is 1220140039. The next prime is 1220140111. The reversal of 1220140043 is 3400410221.

It is a cyclic number.

It is not a de Polignac number, because 1220140043 - 2² = 1220140039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220140003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182938 + ... + 1183968.

It is an arithmetic number, because the mean of its divisors is an integer number (81012000).

Almost surely, 2^1220140043 is an apocalyptic number.

1220140043 is a deficient number, since it is larger than the sum of its proper divisors (76051957).

1220140043 is a wasteful number, since it uses less digits than its factorization.

1220140043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1220140043 is about 34930.5030453327. The cubic root of 1220140043 is about 1068.5706138603.

Adding to 1220140043 its reverse (3400410221), we get a palindrome (4620550264).

The spelling of 1220140043 in words is "one billion, two hundred twenty million, one hundred forty thousand, forty-three".