401740523 has 2 divisors, whose sum is σ = 401740524. Its totient is φ = 401740522.

The previous prime is 401740519. The next prime is 401740553. The reversal of 401740523 is 325047104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401740523 - 2² = 401740519 is a prime.

It is a super-2 number, since 2×401740523² = 322790895640627058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401740492 and 401740501.

It is not a weakly prime, because it can be changed into another prime (401740553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200870261 + 200870262.

It is an arithmetic number, because the mean of its divisors is an integer number (200870262).

Almost surely, 2^401740523 is an apocalyptic number.

401740523 is a deficient number, since it is larger than the sum of its proper divisors (1).

401740523 is an equidigital number, since it uses as much as digits as its factorization.

401740523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 401740523 is about 20043.4658430123. The cubic root of 401740523 is about 737.8734436571.

Adding to 401740523 its reverse (325047104), we get a palindrome (726787627).

The spelling of 401740523 in words is "four hundred one million, seven hundred forty thousand, five hundred twenty-three".