223124120042 has 4 divisors (see below), whose sum is σ = 334686180066. Its totient is φ = 111562060020.

The previous prime is 223124119979. The next prime is 223124120047. The reversal of 223124120042 is 240021421322.

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., 177703559401 + 45420560641 = 421549^2 + 213121^2 .

It is a super-3 number, since 3×223124120042³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223124120047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55781030009 + ... + 55781030012.

Almost surely, 2^223124120042 is an apocalyptic number.

223124120042 is a deficient number, since it is larger than the sum of its proper divisors (111562060024).

223124120042 is a wasteful number, since it uses less digits than its factorization.

223124120042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111562060023.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 223124120042 its reverse (240021421322), we get a palindrome (463145541364).

The spelling of 223124120042 in words is "two hundred twenty-three billion, one hundred twenty-four million, one hundred twenty thousand, forty-two".