402606254 has 4 divisors (see below), whose sum is σ = 603909384. Its totient is φ = 201303126.

The previous prime is 402606233. The next prime is 402606293. The reversal of 402606254 is 452606204.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100651562 + ... + 100651565.

It is an arithmetic number, because the mean of its divisors is an integer number (150977346).

Almost surely, 2^402606254 is an apocalyptic number.

402606254 is a deficient number, since it is larger than the sum of its proper divisors (201303130).

402606254 is a wasteful number, since it uses less digits than its factorization.

402606254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201303129.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 402606254 is about 20065.0505606141. The cubic root of 402606254 is about 738.4030903365.

The spelling of 402606254 in words is "four hundred two million, six hundred six thousand, two hundred fifty-four".