401342743 has 2 divisors, whose sum is σ = 401342744. Its totient is φ = 401342742.

The previous prime is 401342717. The next prime is 401342813. The reversal of 401342743 is 347243104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401342743 is a prime.

It is a super-2 number, since 2×401342743² = 322151994717528098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401342143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200671371 + 200671372.

It is an arithmetic number, because the mean of its divisors is an integer number (200671372).

Almost surely, 2^401342743 is an apocalyptic number.

401342743 is a deficient number, since it is larger than the sum of its proper divisors (1).

401342743 is an equidigital number, since it uses as much as digits as its factorization.

401342743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 401342743 is about 20033.5404509537. The cubic root of 401342743 is about 737.6298301740.

Adding to 401342743 its reverse (347243104), we get a palindrome (748585847).

The spelling of 401342743 in words is "four hundred one million, three hundred forty-two thousand, seven hundred forty-three".