401402043 has 48 divisors (see below), whose sum is σ = 698720256. Its totient is φ = 217200960.

The previous prime is 401401997. The next prime is 401402059. The reversal of 401402043 is 340204104.

It is not a de Polignac number, because 401402043 - 2⁸ = 401401787 is a prime.

It is a super-2 number, since 2×401402043² = 322247200249147698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401402063) 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 in 47 ways as a sum of consecutive naturals, for example, 89605 + ... + 93977.

It is an arithmetic number, because the mean of its divisors is an integer number (14556672).

Almost surely, 2^401402043 is an apocalyptic number.

401402043 is a deficient number, since it is larger than the sum of its proper divisors (297318213).

401402043 is a wasteful number, since it uses less digits than its factorization.

401402043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464 (or 4461 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 401402043 is about 20035.0204142646. The cubic root of 401402043 is about 737.6661576402. Note that the first 3 decimals are identical.

Adding to 401402043 its reverse (340204104), we get a palindrome (741606147).

The spelling of 401402043 in words is "four hundred one million, four hundred two thousand, forty-three".