401520411 has 12 divisors (see below), whose sum is σ = 595649392. Its totient is φ = 260445456.

The previous prime is 401520377. The next prime is 401520437. The reversal of 401520411 is 114025104.

It is not a de Polignac number, because 401520411 - 2¹⁰ = 401519387 is a prime.

It is a super-2 number, since 2×401520411² = 322437280899217842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401520211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 602551 + ... + 603216.

Almost surely, 2^401520411 is an apocalyptic number.

401520411 is a deficient number, since it is larger than the sum of its proper divisors (194128981).

401520411 is a wasteful number, since it uses less digits than its factorization.

401520411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205810 (or 1205807 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 401520411 is about 20037.9742239579. The cubic root of 401520411 is about 737.7386597511.

Adding to 401520411 its reverse (114025104), we get a palindrome (515545515).

The spelling of 401520411 in words is "four hundred one million, five hundred twenty thousand, four hundred eleven".