642113342 has 16 divisors (see below), whose sum is σ = 1059331392. Its totient is φ = 290053920.

The previous prime is 642113291. The next prime is 642113357. The reversal of 642113342 is 243311246.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 261509 + ... + 263952.

It is an arithmetic number, because the mean of its divisors is an integer number (66208212).

Almost surely, 2^642113342 is an apocalyptic number.

642113342 is a deficient number, since it is larger than the sum of its proper divisors (417218050).

642113342 is a wasteful number, since it uses less digits than its factorization.

642113342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525523.

The product of its digits is 3456, while the sum is 26.

The square root of 642113342 is about 25339.9554458961. The cubic root of 642113342 is about 862.7213874596.

Adding to 642113342 its reverse (243311246), we get a palindrome (885424588).

The spelling of 642113342 in words is "six hundred forty-two million, one hundred thirteen thousand, three hundred forty-two".