124000542102442 has 4 divisors (see below), whose sum is σ = 186000813153666. Its totient is φ = 62000271051220.

The previous prime is 124000542102419. The next prime is 124000542102443. The reversal of 124000542102442 is 244201245000421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 100363549821921 + 23636992280521 = 10018161^2 + 4861789^2 .

It is a super-2 number, since 2×124000542102442² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (124000542102443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31000135525609 + ... + 31000135525612.

Almost surely, 2^{124000542102442} is an apocalyptic number.

124000542102442 is a deficient number, since it is larger than the sum of its proper divisors (62000271051224).

124000542102442 is an equidigital number, since it uses as much as digits as its factorization.

124000542102442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62000271051223.

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 124000542102442 its reverse (244201245000421), we get a palindrome (368201787102863).

The spelling of 124000542102442 in words is "one hundred twenty-four trillion, five hundred forty-two million, one hundred two thousand, four hundred forty-two".