205402430 has 8 divisors (see below), whose sum is σ = 369724392. Its totient is φ = 82160968.

The previous prime is 205402409. The next prime is 205402451. The reversal of 205402430 is 34204502.

It is an interprime number because it is at equal distance from previous prime (205402409) and next prime (205402451).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 10270112 + ... + 10270131.

It is an arithmetic number, because the mean of its divisors is an integer number (46215549).

Almost surely, 2^205402430 is an apocalyptic number.

205402430 is a deficient number, since it is larger than the sum of its proper divisors (164321962).

205402430 is a wasteful number, since it uses less digits than its factorization.

205402430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20540250.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 205402430 is about 14331.8676382389. The cubic root of 205402430 is about 590.0224352285.

Adding to 205402430 its reverse (34204502), we get a palindrome (239606932).

The spelling of 205402430 in words is "two hundred five million, four hundred two thousand, four hundred thirty".