401256043 has 2 divisors, whose sum is σ = 401256044. Its totient is φ = 401256042.

The previous prime is 401256019. The next prime is 401256059. The reversal of 401256043 is 340652104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401256043 is a prime.

It is a super-3 number, since 3×401256043³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 401255999 and 401256017.

It is not a weakly prime, because it can be changed into another prime (401256073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200628021 + 200628022.

It is an arithmetic number, because the mean of its divisors is an integer number (200628022).

Almost surely, 2^401256043 is an apocalyptic number.

401256043 is a deficient number, since it is larger than the sum of its proper divisors (1).

401256043 is an equidigital number, since it uses as much as digits as its factorization.

401256043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 401256043 is about 20031.3764629393. The cubic root of 401256043 is about 737.5767108945.

The spelling of 401256043 in words is "four hundred one million, two hundred fifty-six thousand, forty-three".