406205134 has 4 divisors (see below), whose sum is σ = 609307704. Its totient is φ = 203102566.

The previous prime is 406205131. The next prime is 406205143. The reversal of 406205134 is 431502604.

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

It is a super-2 number, since 2×406205134² = 330005221775915912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406205099 and 406205108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406205131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101551282 + ... + 101551285.

It is an arithmetic number, because the mean of its divisors is an integer number (152326926).

Almost surely, 2^406205134 is an apocalyptic number.

406205134 is a deficient number, since it is larger than the sum of its proper divisors (203102570).

406205134 is a wasteful number, since it uses less digits than its factorization.

406205134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203102569.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 406205134 is about 20154.5313515348. The cubic root of 406205134 is about 740.5967514112.

Adding to 406205134 its reverse (431502604), we get a palindrome (837707738).

It can be divided in two parts, 40620 and 5134, that added together give a palindrome (45754).

The spelling of 406205134 in words is "four hundred six million, two hundred five thousand, one hundred thirty-four".