401623141 has 4 divisors (see below), whose sum is σ = 401670252. Its totient is φ = 401576032.

The previous prime is 401623127. The next prime is 401623213. The reversal of 401623141 is 141326104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 321162241 + 80460900 = 17921^2 + 8970^2 .

It is a cyclic number.

It is not a de Polignac number, because 401623141 - 2⁹ = 401622629 is a prime.

It is a super-2 number, since 2×401623141² = 322602294773411762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401623111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6790 + ... + 29143.

It is an arithmetic number, because the mean of its divisors is an integer number (100417563).

Almost surely, 2^401623141 is an apocalyptic number.

It is an amenable number.

401623141 is a deficient number, since it is larger than the sum of its proper divisors (47111).

401623141 is a wasteful number, since it uses less digits than its factorization.

401623141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47110.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 401623141 is about 20040.5374428931. The cubic root of 401623141 is about 737.8015718123.

Adding to 401623141 its reverse (141326104), we get a palindrome (542949245).

The spelling of 401623141 in words is "four hundred one million, six hundred twenty-three thousand, one hundred forty-one".