105090742 has 4 divisors (see below), whose sum is σ = 157636116. Its totient is φ = 52545370.

The previous prime is 105090709. The next prime is 105090761. The reversal of 105090742 is 247090501.

It is a happy number.

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

It is a super-2 number, since 2×105090742² = 22088128108221128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105090742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26272684 + ... + 26272687.

It is an arithmetic number, because the mean of its divisors is an integer number (39409029).

Almost surely, 2^105090742 is an apocalyptic number.

105090742 is a deficient number, since it is larger than the sum of its proper divisors (52545374).

105090742 is an equidigital number, since it uses as much as digits as its factorization.

105090742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52545373.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 105090742 is about 10251.3775659664. The cubic root of 105090742 is about 471.9052614366.

The spelling of 105090742 in words is "one hundred five million, ninety thousand, seven hundred forty-two".