1055220243142 has 64 divisors (see below), whose sum is σ = 1767669055488. Its totient is φ = 469149408000.

The previous prime is 1055220243139. The next prime is 1055220243157. The reversal of 1055220243142 is 2413420225501.

It is a happy number.

It is a super-2 number, since 2×1055220243142² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 300545167 + ... + 300548677.

It is an arithmetic number, because the mean of its divisors is an integer number (27619828992).

Almost surely, 2^{1055220243142} is an apocalyptic number.

1055220243142 is a deficient number, since it is larger than the sum of its proper divisors (712448812346).

1055220243142 is a wasteful number, since it uses less digits than its factorization.

1055220243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5165.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1055220243142 its reverse (2413420225501), we get a palindrome (3468640468643).

The spelling of 1055220243142 in words is "one trillion, fifty-five billion, two hundred twenty million, two hundred forty-three thousand, one hundred forty-two".