401423655143 has 32 divisors (see below), whose sum is σ = 488638656000. Its totient is φ = 322120955520.

The previous prime is 401423655121. The next prime is 401423655167. The reversal of 401423655143 is 341556324104.

It is not a de Polignac number, because 401423655143 - 2¹² = 401423651047 is a prime.

It is a super-2 number, since 2×401423655143² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401423655097 and 401423655106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401423655343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5457833 + ... + 5530893.

It is an arithmetic number, because the mean of its divisors is an integer number (15269958000).

Almost surely, 2^401423655143 is an apocalyptic number.

401423655143 is a deficient number, since it is larger than the sum of its proper divisors (87215000857).

401423655143 is a wasteful number, since it uses less digits than its factorization.

401423655143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73575.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 401423655143 its reverse (341556324104), we get a palindrome (742979979247).

The spelling of 401423655143 in words is "four hundred one billion, four hundred twenty-three million, six hundred fifty-five thousand, one hundred forty-three".