401290 has 8 divisors (see below), whose sum is σ = 722340. Its totient is φ = 160512.

The previous prime is 401287. The next prime is 401309. The reversal of 401290 is 92104.

It can be written as a sum of positive squares in 2 ways, for example, as 335241 + 66049 = 579^2 + 257^2 .

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

It is a super-2 number, since 2×401290² = 322067328200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20055 + ... + 20074.

2⁴⁰¹²⁹⁰ is an apocalyptic number.

401290 is a deficient number, since it is larger than the sum of its proper divisors (321050).

401290 is a wasteful number, since it uses less digits than its factorization.

401290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40136.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 401290 is about 633.4745456607. The cubic root of 401290 is about 73.7597516551.

Adding to 401290 its reverse (92104), we get a palindrome (493394).

The spelling of 401290 in words is "four hundred one thousand, two hundred ninety".