124021103042 has 4 divisors (see below), whose sum is σ = 186031654566. Its totient is φ = 62010551520.

The previous prime is 124021103039. The next prime is 124021103047. The reversal of 124021103042 is 240301120421.

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., 122928073321 + 1093029721 = 350611^2 + 33061^2 .

It is not an unprimeable number, because it can be changed into a prime (124021103047) by changing a digit.

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 as a sum of consecutive naturals, namely, 31005275759 + ... + 31005275762.

Almost surely, 2^124021103042 is an apocalyptic number.

124021103042 is a deficient number, since it is larger than the sum of its proper divisors (62010551524).

124021103042 is an equidigital number, since it uses as much as digits as its factorization.

124021103042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62010551523.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 124021103042 its reverse (240301120421), we get a palindrome (364322223463).

The spelling of 124021103042 in words is "one hundred twenty-four billion, twenty-one million, one hundred three thousand, forty-two".