401942242 has 32 divisors (see below), whose sum is σ = 667675008. Its totient is φ = 180302976.

The previous prime is 401942231. The next prime is 401942267. The reversal of 401942242 is 242249104.

It is a super-3 number, since 3×401942242³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401942242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259723 + ... + 261265.

It is an arithmetic number, because the mean of its divisors is an integer number (20864844).

Almost surely, 2^401942242 is an apocalyptic number.

401942242 is a deficient number, since it is larger than the sum of its proper divisors (265732766).

401942242 is a wasteful number, since it uses less digits than its factorization.

401942242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 401942242 is about 20048.4972504175. The cubic root of 401942242 is about 737.9969215237.

It can be divided in two parts, 40194 and 2242, that added together give a square (42436 = 206²).

The spelling of 401942242 in words is "four hundred one million, nine hundred forty-two thousand, two hundred forty-two".