401320045 has 24 divisors (see below), whose sum is σ = 568124928. Its totient is φ = 271303200.

The previous prime is 401320043. The next prime is 401320057. The reversal of 401320045 is 540023104.

It is not a de Polignac number, because 401320045 - 2¹ = 401320043 is a prime.

It is a super-2 number, since 2×401320045² = 322115557037604050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401320043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5860 + ... + 28930.

It is an arithmetic number, because the mean of its divisors is an integer number (23671872).

Almost surely, 2^401320045 is an apocalyptic number.

It is an amenable number.

401320045 is a deficient number, since it is larger than the sum of its proper divisors (166804883).

401320045 is a wasteful number, since it uses less digits than its factorization.

401320045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23161 (or 23154 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 401320045 is about 20032.9739429771. The cubic root of 401320045 is about 737.6159243227.

Adding to 401320045 its reverse (540023104), we get a palindrome (941343149).

The spelling of 401320045 in words is "four hundred one million, three hundred twenty thousand, forty-five".