401542963 has 2 divisors, whose sum is σ = 401542964. Its totient is φ = 401542962.

The previous prime is 401542919. The next prime is 401543011. The reversal of 401542963 is 369245104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401542963 - 2⁹ = 401542451 is a prime.

It is a super-2 number, since 2×401542963² = 322473502269638738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401542663) 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, 200771481 + 200771482.

It is an arithmetic number, because the mean of its divisors is an integer number (200771482).

Almost surely, 2^401542963 is an apocalyptic number.

401542963 is a deficient number, since it is larger than the sum of its proper divisors (1).

401542963 is an equidigital number, since it uses as much as digits as its factorization.

401542963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 401542963 is about 20038.5369475918. The cubic root of 401542963 is about 737.7524715610.

The spelling of 401542963 in words is "four hundred one million, five hundred forty-two thousand, nine hundred sixty-three".