1355453120242 has 8 divisors (see below), whose sum is σ = 2189578117356. Its totient is φ = 625593747792.

The previous prime is 1355453120191. The next prime is 1355453120249. The reversal of 1355453120242 is 2420213545531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1342537025041 + 12916095201 = 1158679^2 + 113649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1355453120242² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1355453120249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26066406133 + ... + 26066406184.

Almost surely, 2^{1355453120242} is an apocalyptic number.

1355453120242 is a deficient number, since it is larger than the sum of its proper divisors (834124997114).

1355453120242 is a wasteful number, since it uses less digits than its factorization.

1355453120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52132812332.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 1355453120242 its reverse (2420213545531), we get a palindrome (3775666665773).

The spelling of 1355453120242 in words is "one trillion, three hundred fifty-five billion, four hundred fifty-three million, one hundred twenty thousand, two hundred forty-two".