1220757243342 has 32 divisors (see below), whose sum is σ = 3004940908032. Its totient is φ = 321957954144.

The previous prime is 1220757243311. The next prime is 1220757243383. The reversal of 1220757243342 is 2433427570221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1220757243294 and 1220757243303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117909018 + ... + 1117910109.

It is an arithmetic number, because the mean of its divisors is an integer number (93904403376).

Almost surely, 2^{1220757243342} is an apocalyptic number.

1220757243342 is an abundant number, since it is smaller than the sum of its proper divisors (1784183664690).

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

1220757243342 is a wasteful number, since it uses less digits than its factorization.

1220757243342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235819152.

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 1220757243342 in words is "one trillion, two hundred twenty billion, seven hundred fifty-seven million, two hundred forty-three thousand, three hundred forty-two".