130440223444442 has 4 divisors (see below), whose sum is σ = 195660335166666. Its totient is φ = 65220111722220.

The previous prime is 130440223444409. The next prime is 130440223444457. The reversal of 130440223444442 is 244444322044031.

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., 113678478564121 + 16761744880321 = 10662011^2 + 4094111^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130440223444442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32610055861109 + ... + 32610055861112.

Almost surely, 2^{130440223444442} is an apocalyptic number.

130440223444442 is a deficient number, since it is larger than the sum of its proper divisors (65220111722224).

130440223444442 is an equidigital number, since it uses as much as digits as its factorization.

130440223444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65220111722223.

The product of its (nonzero) digits is 1179648, while the sum is 41.

Adding to 130440223444442 its reverse (244444322044031), we get a palindrome (374884545488473).

The spelling of 130440223444442 in words is "one hundred thirty trillion, four hundred forty billion, two hundred twenty-three million, four hundred forty-four thousand, four hundred forty-two".