122540004242 has 4 divisors (see below), whose sum is σ = 183810006366. Its totient is φ = 61270002120.

The previous prime is 122540004211. The next prime is 122540004247. The reversal of 122540004242 is 242400045221.

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., 115879648921 + 6660355321 = 340411^2 + 81611^2 .

It is not an unprimeable number, because it can be changed into a prime (122540004247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30635001059 + ... + 30635001062.

Almost surely, 2^122540004242 is an apocalyptic number.

122540004242 is a deficient number, since it is larger than the sum of its proper divisors (61270002124).

122540004242 is an equidigital number, since it uses as much as digits as its factorization.

122540004242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61270002123.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 122540004242 its reverse (242400045221), we get a palindrome (364940049463).

The spelling of 122540004242 in words is "one hundred twenty-two billion, five hundred forty million, four thousand, two hundred forty-two".