401742277 has 2 divisors, whose sum is σ = 401742278. Its totient is φ = 401742276.

The previous prime is 401742259. The next prime is 401742379. The reversal of 401742277 is 772247104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398641156 + 3101121 = 19966^2 + 1761^2 .

It is a cyclic number.

It is not a de Polignac number, because 401742277 - 2¹⁹ = 401217989 is a prime.

It is a super-2 number, since 2×401742277² = 322793714258289458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401742877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200871138 + 200871139.

It is an arithmetic number, because the mean of its divisors is an integer number (200871139).

Almost surely, 2^401742277 is an apocalyptic number.

It is an amenable number.

401742277 is a deficient number, since it is larger than the sum of its proper divisors (1).

401742277 is an equidigital number, since it uses as much as digits as its factorization.

401742277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 401742277 is about 20043.5095978723. The cubic root of 401742277 is about 737.8745175079.

The spelling of 401742277 in words is "four hundred one million, seven hundred forty-two thousand, two hundred seventy-seven".