102206542 has 8 divisors (see below), whose sum is σ = 154250856. Its totient is φ = 50789592.

The previous prime is 102206539. The next prime is 102206609. The reversal of 102206542 is 245602201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156433 + ... + 157084.

It is an arithmetic number, because the mean of its divisors is an integer number (19281357).

Almost surely, 2^102206542 is an apocalyptic number.

102206542 is a deficient number, since it is larger than the sum of its proper divisors (52044314).

102206542 is a wasteful number, since it uses less digits than its factorization.

102206542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313682.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102206542 is about 10109.7251199031. The cubic root of 102206542 is about 467.5480301821.

Adding to 102206542 its reverse (245602201), we get a palindrome (347808743).

The spelling of 102206542 in words is "one hundred two million, two hundred six thousand, five hundred forty-two".