1220042043 has 48 divisors (see below), whose sum is σ = 2085344352. Its totient is φ = 678912000.

The previous prime is 1220042023. The next prime is 1220042051. The reversal of 1220042043 is 3402400221.

1220042043 is a `hidden beast` number, since 1 + 2 + 200 + 420 + 43 = 666.

1220042043 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220042043 - 2⁹ = 1220041531 is a prime.

It is a super-2 number, since 2×1220042043² = 2977005173375227698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220042023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60163 + ... + 77843.

It is an arithmetic number, because the mean of its divisors is an integer number (43444674).

Almost surely, 2^1220042043 is an apocalyptic number.

1220042043 is a deficient number, since it is larger than the sum of its proper divisors (865302309).

1220042043 is a wasteful number, since it uses less digits than its factorization.

1220042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756 (or 17753 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1220042043 is about 34929.1002317552. The cubic root of 1220042043 is about 1068.5420043782.

Adding to 1220042043 its reverse (3402400221), we get a palindrome (4622442264).

The spelling of 1220042043 in words is "one billion, two hundred twenty million, forty-two thousand, forty-three".