105131402 has 4 divisors (see below), whose sum is σ = 157697106. Its totient is φ = 52565700.

The previous prime is 105131401. The next prime is 105131407. The reversal of 105131402 is 204131501.

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

It can be written as a sum of positive squares in only one way, i.e., 105042001 + 89401 = 10249^2 + 299^2 .

It is a super-2 number, since 2×105131402² = 22105223372971208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105131401) 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 as a sum of consecutive naturals, namely, 26282849 + ... + 26282852.

Almost surely, 2^105131402 is an apocalyptic number.

105131402 is a deficient number, since it is larger than the sum of its proper divisors (52565704).

105131402 is an equidigital number, since it uses as much as digits as its factorization.

105131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52565703.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 105131402 is about 10253.3605222873. The cubic root of 105131402 is about 471.9661142244.

Adding to 105131402 its reverse (204131501), we get a palindrome (309262903).

Subtracting 105131402 from its reverse (204131501), we obtain a palindrome (99000099).

The spelling of 105131402 in words is "one hundred five million, one hundred thirty-one thousand, four hundred two".