406602143 has 4 divisors (see below), whose sum is σ = 411501048. Its totient is φ = 401703240.

The previous prime is 406602121. The next prime is 406602151. The reversal of 406602143 is 341206604.

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

It is a cyclic number.

It is not a de Polignac number, because 406602143 - 2¹⁰ = 406601119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406602103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2449328 + ... + 2449493.

It is an arithmetic number, because the mean of its divisors is an integer number (102875262).

Almost surely, 2^406602143 is an apocalyptic number.

406602143 is a deficient number, since it is larger than the sum of its proper divisors (4898905).

406602143 is an equidigital number, since it uses as much as digits as its factorization.

406602143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898904.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 406602143 is about 20164.3780712424. The cubic root of 406602143 is about 740.8379496089.

Adding to 406602143 its reverse (341206604), we get a palindrome (747808747).

The spelling of 406602143 in words is "four hundred six million, six hundred two thousand, one hundred forty-three".