1553220342 has 24 divisors (see below), whose sum is σ = 3473870400. Its totient is φ = 501038640.

The previous prime is 1553220323. The next prime is 1553220359. The reversal of 1553220342 is 2430223551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391217 + ... + 1392332.

It is an arithmetic number, because the mean of its divisors is an integer number (144744600).

Almost surely, 2^1553220342 is an apocalyptic number.

1553220342 is an abundant number, since it is smaller than the sum of its proper divisors (1920650058).

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

1553220342 is a wasteful number, since it uses less digits than its factorization.

1553220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783588 (or 2783585 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1553220342 is about 39410.9165333667. The cubic root of 1553220342 is about 1158.0954533073.

Adding to 1553220342 its reverse (2430223551), we get a palindrome (3983443893).

The spelling of 1553220342 in words is "one billion, five hundred fifty-three million, two hundred twenty thousand, three hundred forty-two".