1204542120340 has 24 divisors (see below), whose sum is σ = 2724118334280. Its totient is φ = 444754013568.

The previous prime is 1204542120293. The next prime is 1204542120377. The reversal of 1204542120340 is 430212454021.

It can be written as a sum of positive squares in 4 ways, for example, as 15735695364 + 1188806424976 = 125442^2 + 1090324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1204542120299 and 1204542120308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316426895 + ... + 2316427414.

It is an arithmetic number, because the mean of its divisors is an integer number (113504930595).

Almost surely, 2^{1204542120340} is an apocalyptic number.

1204542120340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204542120340 is an abundant number, since it is smaller than the sum of its proper divisors (1519576213940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1204542120340 is a wasteful number, since it uses less digits than its factorization.

1204542120340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632854331 (or 4632854329 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1204542120340 its reverse (430212454021), we get a palindrome (1634754574361).

The spelling of 1204542120340 in words is "one trillion, two hundred four billion, five hundred forty-two million, one hundred twenty thousand, three hundred forty".