10405242 has 24 divisors (see below), whose sum is σ = 22610016. Its totient is φ = 3458376.

The previous prime is 10405211. The next prime is 10405247. The reversal of 10405242 is 24250401.

It is a super-2 number, since 2×10405242² = 216538122157128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10405247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8173 + ... + 9359.

It is an arithmetic number, because the mean of its divisors is an integer number (942084).

Almost surely, 2^10405242 is an apocalyptic number.

10405242 is an abundant number, since it is smaller than the sum of its proper divisors (12204774).

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

10405242 is a wasteful number, since it uses less digits than its factorization.

10405242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 10405242 is about 3225.7157345309. The cubic root of 10405242 is about 218.3152440516.

Adding to 10405242 its reverse (24250401), we get a palindrome (34655643).

The spelling of 10405242 in words is "ten million, four hundred five thousand, two hundred forty-two".