105240402 has 12 divisors (see below), whose sum is σ = 228020910. Its totient is φ = 35080128.

The previous prime is 105240371. The next prime is 105240407. The reversal of 105240402 is 204042501.

It can be written as a sum of positive squares in only one way, i.e., 98783721 + 6456681 = 9939^2 + 2541^2 .

It is a super-2 number, since 2×105240402² = 22151084426243208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5846689 = 105240402 / (1 + 0 + 5 + 2 + 4 + 0 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (105240407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2923327 + ... + 2923362.

Almost surely, 2^105240402 is an apocalyptic number.

105240402 is an abundant number, since it is smaller than the sum of its proper divisors (122780508).

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

105240402 is a wasteful number, since it uses less digits than its factorization.

105240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846697 (or 5846694 counting only the distinct ones).

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

The square root of 105240402 is about 10258.6744757790. The cubic root of 105240402 is about 472.1291690193.

Adding to 105240402 its reverse (204042501), we get a palindrome (309282903).

The spelling of 105240402 in words is "one hundred five million, two hundred forty thousand, four hundred two".