401240012312243 has 16 divisors (see below), whose sum is σ = 432536085037056. Its totient is φ = 370005596745120.

The previous prime is 401240012312231. The next prime is 401240012312263. The reversal of 401240012312243 is 342213210042104.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401240012312243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401240012312213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490234730 + ... + 491052512.

It is an arithmetic number, because the mean of its divisors is an integer number (27033505314816).

Almost surely, 2^{401240012312243} is an apocalyptic number.

401240012312243 is a deficient number, since it is larger than the sum of its proper divisors (31296072724813).

401240012312243 is a wasteful number, since it uses less digits than its factorization.

401240012312243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855434.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 401240012312243 its reverse (342213210042104), we get a palindrome (743453222354347).

The spelling of 401240012312243 in words is "four hundred one trillion, two hundred forty billion, twelve million, three hundred twelve thousand, two hundred forty-three".