405542102 has 16 divisors (see below), whose sum is σ = 699237792. Its totient is φ = 172798080.

The previous prime is 405542101. The next prime is 405542107. The reversal of 405542102 is 201245504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405542101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81299 + ... + 86142.

It is an arithmetic number, because the mean of its divisors is an integer number (43702362).

Almost surely, 2^405542102 is an apocalyptic number.

405542102 is a deficient number, since it is larger than the sum of its proper divisors (293695690).

405542102 is a wasteful number, since it uses less digits than its factorization.

405542102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167623.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 405542102 is about 20138.0759259667. The cubic root of 405542102 is about 740.1935833938.

Adding to 405542102 its reverse (201245504), we get a palindrome (606787606).

The spelling of 405542102 in words is "four hundred five million, five hundred forty-two thousand, one hundred two".