401428403 has 2 divisors, whose sum is σ = 401428404. Its totient is φ = 401428402.

The previous prime is 401428381. The next prime is 401428441. The reversal of 401428403 is 304824104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401428403 - 2¹⁰ = 401427379 is a prime.

It is a super-2 number, since 2×401428403² = 322289525470260818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401428103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200714201 + 200714202.

It is an arithmetic number, because the mean of its divisors is an integer number (200714202).

Almost surely, 2^401428403 is an apocalyptic number.

401428403 is a deficient number, since it is larger than the sum of its proper divisors (1).

401428403 is an equidigital number, since it uses as much as digits as its factorization.

401428403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 401428403 is about 20035.6782515591. The cubic root of 401428403 is about 737.6823047547.

The spelling of 401428403 in words is "four hundred one million, four hundred twenty-eight thousand, four hundred three".