401942 has 4 divisors (see below), whose sum is σ = 602916. Its totient is φ = 200970.

The previous prime is 401939. The next prime is 401953. The reversal of 401942 is 249104.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100484 + ... + 100487.

It is an arithmetic number, because the mean of its divisors is an integer number (150729).

2⁴⁰¹⁹⁴² is an apocalyptic number.

401942 is a deficient number, since it is larger than the sum of its proper divisors (200974).

401942 is a wasteful number, since it uses less digits than its factorization.

401942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200973.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 401942 is about 633.9889588944. The cubic root of 401942 is about 73.7996773413.

The spelling of 401942 in words is "four hundred one thousand, nine hundred forty-two".