1373861420242 has 4 divisors (see below), whose sum is σ = 2060792130366. Its totient is φ = 686930710120.

The previous prime is 1373861420233. The next prime is 1373861420249. The reversal of 1373861420242 is 2420241683731.

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., 854624442681 + 519236977561 = 924459^2 + 720581^2 .

It is not an unprimeable number, because it can be changed into a prime (1373861420249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343465355059 + ... + 343465355062.

Almost surely, 2^{1373861420242} is an apocalyptic number.

1373861420242 is a deficient number, since it is larger than the sum of its proper divisors (686930710124).

1373861420242 is an equidigital number, since it uses as much as digits as its factorization.

1373861420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686930710123.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 1373861420242 in words is "one trillion, three hundred seventy-three billion, eight hundred sixty-one million, four hundred twenty thousand, two hundred forty-two".