261112102 has 8 divisors (see below), whose sum is σ = 391925016. Its totient is φ = 130470432.

The previous prime is 261112097. The next prime is 261112109. The reversal of 261112102 is 201211162.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261112109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38928 + ... + 45139.

It is an arithmetic number, because the mean of its divisors is an integer number (48990627).

Almost surely, 2^261112102 is an apocalyptic number.

261112102 is a deficient number, since it is larger than the sum of its proper divisors (130812914).

261112102 is a wasteful number, since it uses less digits than its factorization.

261112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85622.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 261112102 is about 16158.9635187409. The cubic root of 261112102 is about 639.1591349698.

Adding to 261112102 its reverse (201211162), we get a palindrome (462323264).

The spelling of 261112102 in words is "two hundred sixty-one million, one hundred twelve thousand, one hundred two".