105402020342 has 4 divisors (see below), whose sum is σ = 158103030516. Its totient is φ = 52701010170.

The previous prime is 105402020329. The next prime is 105402020473. The reversal of 105402020342 is 243020204501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×105402020342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26350505084 + ... + 26350505087.

It is an arithmetic number, because the mean of its divisors is an integer number (39525757629).

Almost surely, 2^105402020342 is an apocalyptic number.

105402020342 is a deficient number, since it is larger than the sum of its proper divisors (52701010174).

105402020342 is an equidigital number, since it uses as much as digits as its factorization.

105402020342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52701010173.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 105402020342 its reverse (243020204501), we get a palindrome (348422224843).

The spelling of 105402020342 in words is "one hundred five billion, four hundred two million, twenty thousand, three hundred forty-two".