401138 has 4 divisors (see below), whose sum is σ = 601710. Its totient is φ = 200568.

The previous prime is 401119. The next prime is 401161. The reversal of 401138 is 831104.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 380689 + 20449 = 617^2 + 143^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100283 + ... + 100286.

2⁴⁰¹¹³⁸ is an apocalyptic number.

401138 is a deficient number, since it is larger than the sum of its proper divisors (200572).

401138 is a wasteful number, since it uses less digits than its factorization.

401138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200571.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401138 is about 633.3545610478. The cubic root of 401138 is about 73.7504376111.

The spelling of 401138 in words is "four hundred one thousand, one hundred thirty-eight".