42245123554 has 4 divisors (see below), whose sum is σ = 63367685334. Its totient is φ = 21122561776.

The previous prime is 42245123533. The next prime is 42245123567. The reversal of 42245123554 is 45532154224.

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., 35881072929 + 6364050625 = 189423^2 + 79775^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561280887 + ... + 10561280890.

Almost surely, 2^42245123554 is an apocalyptic number.

42245123554 is a deficient number, since it is larger than the sum of its proper divisors (21122561780).

42245123554 is a wasteful number, since it uses less digits than its factorization.

42245123554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21122561779.

The product of its digits is 192000, while the sum is 37.

Adding to 42245123554 its reverse (45532154224), we get a palindrome (87777277778).

The spelling of 42245123554 in words is "forty-two billion, two hundred forty-five million, one hundred twenty-three thousand, five hundred fifty-four".