401023741 has 2 divisors, whose sum is σ = 401023742. Its totient is φ = 401023740.

The previous prime is 401023739. The next prime is 401023769. The reversal of 401023741 is 147320104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333208516 + 67815225 = 18254^2 + 8235^2 .

It is a cyclic number.

It is not a de Polignac number, because 401023741 - 2¹ = 401023739 is a prime.

Together with 401023739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401023771) 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, 200511870 + 200511871.

It is an arithmetic number, because the mean of its divisors is an integer number (200511871).

Almost surely, 2^401023741 is an apocalyptic number.

It is an amenable number.

401023741 is a deficient number, since it is larger than the sum of its proper divisors (1).

401023741 is an equidigital number, since it uses as much as digits as its factorization.

401023741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 401023741 is about 20025.5771702091. The cubic root of 401023741 is about 737.4343465831.

Adding to 401023741 its reverse (147320104), we get a palindrome (548343845).

The spelling of 401023741 in words is "four hundred one million, twenty-three thousand, seven hundred forty-one".