202142406 has 16 divisors (see below), whose sum is σ = 425563200. Its totient is φ = 63834408.

The previous prime is 202142399. The next prime is 202142411. The reversal of 202142406 is 604241202.

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 7 ways as a sum of consecutive naturals, for example, 886476 + ... + 886703.

It is an arithmetic number, because the mean of its divisors is an integer number (26597700).

Almost surely, 2^202142406 is an apocalyptic number.

202142406 is an abundant number, since it is smaller than the sum of its proper divisors (223420794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202142406 is a wasteful number, since it uses less digits than its factorization.

202142406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773203.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 202142406 is about 14217.6793465038. The cubic root of 202142406 is about 586.8842799940.

Adding to 202142406 its reverse (604241202), we get a palindrome (806383608).

The spelling of 202142406 in words is "two hundred two million, one hundred forty-two thousand, four hundred six".