214142405 has 4 divisors (see below), whose sum is σ = 256970892. Its totient is φ = 171313920.

The previous prime is 214142363. The next prime is 214142437. The reversal of 214142405 is 504241412.

214142405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141943396 + 72199009 = 11914^2 + 8497^2 .

It is a de Polignac number, because none of the positive numbers 2^k-214142405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21414236 + ... + 21414245.

It is an arithmetic number, because the mean of its divisors is an integer number (64242723).

Almost surely, 2^214142405 is an apocalyptic number.

It is an amenable number.

214142405 is a deficient number, since it is larger than the sum of its proper divisors (42828487).

214142405 is an equidigital number, since it uses as much as digits as its factorization.

214142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42828486.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 214142405 is about 14633.6053315647. The cubic root of 214142405 is about 598.2750502961.

Adding to 214142405 its reverse (504241412), we get a palindrome (718383817).

The spelling of 214142405 in words is "two hundred fourteen million, one hundred forty-two thousand, four hundred five".