122420143431243 has 72 divisors (see below), whose sum is σ = 207887775264000. Its totient is φ = 69213986636256.

The previous prime is 122420143431203. The next prime is 122420143431277. The reversal of 122420143431243 is 342134341024221.

122420143431243 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 201 + 434 + 3 + 12 + 4 + 3 = 666.

It is not a de Polignac number, because 122420143431243 - 2⁸ = 122420143430987 is a prime.

It is a super-2 number, since 2×122420143431243² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122420143431198 and 122420143431207.

It is not an unprimeable number, because it can be changed into a prime (122420143431203) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11812330 + ... + 19605392.

It is an arithmetic number, because the mean of its divisors is an integer number (2887330212000).

Almost surely, 2^{122420143431243} is an apocalyptic number.

122420143431243 is a deficient number, since it is larger than the sum of its proper divisors (85467631832757).

122420143431243 is a wasteful number, since it uses less digits than its factorization.

122420143431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7793461 (or 7793451 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 122420143431243 its reverse (342134341024221), we get a palindrome (464554484455464).

The spelling of 122420143431243 in words is "one hundred twenty-two trillion, four hundred twenty billion, one hundred forty-three million, four hundred thirty-one thousand, two hundred forty-three".