401240029 has 2 divisors, whose sum is σ = 401240030. Its totient is φ = 401240028.

The previous prime is 401239939. The next prime is 401240053. The reversal of 401240029 is 920042104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260176900 + 141063129 = 16130^2 + 11877^2 .

It is a cyclic number.

It is not a de Polignac number, because 401240029 - 2¹⁷ = 401108957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401239991 and 401240009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401240629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200620014 + 200620015.

It is an arithmetic number, because the mean of its divisors is an integer number (200620015).

Almost surely, 2^401240029 is an apocalyptic number.

It is an amenable number.

401240029 is a deficient number, since it is larger than the sum of its proper divisors (1).

401240029 is an equidigital number, since it uses as much as digits as its factorization.

401240029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 401240029 is about 20030.9767360456. The cubic root of 401240029 is about 737.5668986140.

The spelling of 401240029 in words is "four hundred one million, two hundred forty thousand, twenty-nine".