401254729 has 2 divisors, whose sum is σ = 401254730. Its totient is φ = 401254728.

The previous prime is 401254697. The next prime is 401254739. The reversal of 401254729 is 927452104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344176704 + 57078025 = 18552^2 + 7555^2 .

It is a cyclic number.

It is not a de Polignac number, because 401254729 - 2⁵ = 401254697 is a prime.

It is a super-2 number, since 2×401254729² = 322010715089726882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401254694 and 401254703.

It is not a weakly prime, because it can be changed into another prime (401254739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200627364 + 200627365.

It is an arithmetic number, because the mean of its divisors is an integer number (200627365).

Almost surely, 2^401254729 is an apocalyptic number.

It is an amenable number.

401254729 is a deficient number, since it is larger than the sum of its proper divisors (1).

401254729 is an equidigital number, since it uses as much as digits as its factorization.

401254729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 401254729 is about 20031.3436643676. The cubic root of 401254729 is about 737.5759057753.

The spelling of 401254729 in words is "four hundred one million, two hundred fifty-four thousand, seven hundred twenty-nine".