202406427 has 6 divisors (see below), whose sum is σ = 292364852. Its totient is φ = 134937612.

The previous prime is 202406423. The next prime is 202406431. The reversal of 202406427 is 724604202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (202406423) and next prime (202406431).

It is not a de Polignac number, because 202406427 - 2² = 202406423 is a prime.

It is a super-3 number, since 3×202406427³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202406427.

It is not an unprimeable number, because it can be changed into a prime (202406423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11244793 + ... + 11244810.

Almost surely, 2^202406427 is an apocalyptic number.

202406427 is a deficient number, since it is larger than the sum of its proper divisors (89958425).

202406427 is a wasteful number, since it uses less digits than its factorization.

202406427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22489609 (or 22489606 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 202406427 is about 14226.9612707704. The cubic root of 202406427 is about 587.1396813977.

The spelling of 202406427 in words is "two hundred two million, four hundred six thousand, four hundred twenty-seven".