105215421238342 has 16 divisors (see below), whose sum is σ = 158324889668112. Its totient is φ = 52440702360480.

The previous prime is 105215421238337. The next prime is 105215421238363. The reversal of 105215421238342 is 243832124512501.

It is a super-2 number, since 2×105215421238342² (a number of 29 digits) contains 22 as substring.

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, 60224313 + ... + 61946740.

It is an arithmetic number, because the mean of its divisors is an integer number (9895305604257).

Almost surely, 2^{105215421238342} is an apocalyptic number.

105215421238342 is a deficient number, since it is larger than the sum of its proper divisors (53109468429770).

105215421238342 is a wasteful number, since it uses less digits than its factorization.

105215421238342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122172423.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 105215421238342 in words is "one hundred five trillion, two hundred fifteen billion, four hundred twenty-one million, two hundred thirty-eight thousand, three hundred forty-two".