401430505 has 16 divisors (see below), whose sum is σ = 554742144. Its totient is φ = 273162240.

The previous prime is 401430493. The next prime is 401430517. The reversal of 401430505 is 505034104.

It is an interprime number because it is at equal distance from previous prime (401430493) and next prime (401430517).

It is not a de Polignac number, because 401430505 - 2⁵ = 401430473 is a prime.

It is a super-2 number, since 2×401430505² = 322292900689110050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39192 + ... + 48361.

It is an arithmetic number, because the mean of its divisors is an integer number (34671384).

Almost surely, 2^401430505 is an apocalyptic number.

It is an amenable number.

401430505 is a deficient number, since it is larger than the sum of its proper divisors (153311639).

401430505 is a wasteful number, since it uses less digits than its factorization.

401430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87696.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 401430505 is about 20035.7307079128. The cubic root of 401430505 is about 737.6835923280.

Adding to 401430505 its reverse (505034104), we get a palindrome (906464609).

The spelling of 401430505 in words is "four hundred one million, four hundred thirty thousand, five hundred five".