105402138 has 8 divisors (see below), whose sum is σ = 210804288. Its totient is φ = 35134044.

The previous prime is 105402133. The next prime is 105402151. The reversal of 105402138 is 831204501.

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

105402138 is an admirable number.

It is a super-2 number, since 2×105402138² = 22219221389942088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105402131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8783506 + ... + 8783517.

It is an arithmetic number, because the mean of its divisors is an integer number (26350536).

Almost surely, 2^105402138 is an apocalyptic number.

105402138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105402138 is a wasteful number, since it uses less digits than its factorization.

105402138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17567028.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 105402138 is about 10266.5543392124. The cubic root of 105402138 is about 472.3709050755.

Adding to 105402138 its reverse (831204501), we get a palindrome (936606639).

The spelling of 105402138 in words is "one hundred five million, four hundred two thousand, one hundred thirty-eight".