105212442 has 16 divisors (see below), whose sum is σ = 219574080. Its totient is φ = 33545952.

The previous prime is 105212383. The next prime is 105212479. The reversal of 105212442 is 244212501.

It is a super-2 number, since 2×105212442² = 22139315903206728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381067 + ... + 381342.

It is an arithmetic number, because the mean of its divisors is an integer number (13723380).

Almost surely, 2^105212442 is an apocalyptic number.

105212442 is an abundant number, since it is smaller than the sum of its proper divisors (114361638).

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

105212442 is a wasteful number, since it uses less digits than its factorization.

105212442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762437.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 105212442 is about 10257.3116360965. The cubic root of 105212442 is about 472.0873539606.

Adding to 105212442 its reverse (244212501), we get a palindrome (349424943).

The spelling of 105212442 in words is "one hundred five million, two hundred twelve thousand, four hundred forty-two".