1220142342 has 32 divisors (see below), whose sum is σ = 2578060800. Its totient is φ = 383907168.

The previous prime is 1220142337. The next prime is 1220142353. The reversal of 1220142342 is 2432410221.

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, 12259 + ... + 50897.

It is an arithmetic number, because the mean of its divisors is an integer number (80564400).

Almost surely, 2^1220142342 is an apocalyptic number.

1220142342 is an abundant number, since it is smaller than the sum of its proper divisors (1357918458).

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

1220142342 is a wasteful number, since it uses less digits than its factorization.

1220142342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38940.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1220142342 is about 34930.5359535178. The cubic root of 1220142342 is about 1068.5712849970.

Adding to 1220142342 its reverse (2432410221), we get a palindrome (3652552563).

The spelling of 1220142342 in words is "one billion, two hundred twenty million, one hundred forty-two thousand, three hundred forty-two".