401612 has 6 divisors (see below), whose sum is σ = 702828. Its totient is φ = 200804.

The previous prime is 401593. The next prime is 401627. The reversal of 401612 is 216104.

Added to its reverse (216104) it gives a triangular number (617716 = T₁₁₁₁).

It is a super-2 number, since 2×401612² = 322584397088, which contains 22 as substring.

It is an unprimeable number.

401612 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 50198 + ... + 50205.

It is an arithmetic number, because the mean of its divisors is an integer number (117138).

2⁴⁰¹⁶¹² is an apocalyptic number.

It is an amenable number.

401612 is a deficient number, since it is larger than the sum of its proper divisors (301216).

401612 is a wasteful number, since it uses less digits than its factorization.

401612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100407 (or 100405 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 401612 is about 633.7286485555. The cubic root of 401612 is about 73.7794749560.

Adding to 401612 its reverse (216104), we get a palindrome (617716).

The spelling of 401612 in words is "four hundred one thousand, six hundred twelve".