402366242 has 8 divisors (see below), whose sum is σ = 624361500. Its totient is φ = 194245744.

The previous prime is 402366229. The next prime is 402366277. The reversal of 402366242 is 242663204.

It can be written as a sum of positive squares in 2 ways, for example, as 354907921 + 47458321 = 18839^2 + 6889^2 .

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

It is a super-3 number, since 3×402366242³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 in 3 ways as a sum of consecutive naturals, for example, 3468617 + ... + 3468732.

Almost surely, 2^402366242 is an apocalyptic number.

402366242 is a deficient number, since it is larger than the sum of its proper divisors (221995258).

402366242 is a wasteful number, since it uses less digits than its factorization.

402366242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937380.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 402366242 is about 20059.0688218571. The cubic root of 402366242 is about 738.2563292187.

The spelling of 402366242 in words is "four hundred two million, three hundred sixty-six thousand, two hundred forty-two".