401213302440 has 64 divisors (see below), whose sum is σ = 1203695242560. Its totient is φ = 106985295360.

The previous prime is 401213302411. The next prime is 401213302481. The reversal of 401213302440 is 44203312104.

It is a super-2 number, since 2×401213302440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 401213302440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3083500 + ... + 3210980.

It is an arithmetic number, because the mean of its divisors is an integer number (18807738165).

Almost surely, 2^401213302440 is an apocalyptic number.

401213302440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401213302440 is an abundant number, since it is smaller than the sum of its proper divisors (802481940120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401213302440 is a wasteful number, since it uses less digits than its factorization.

401213302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153722 (or 153718 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 401213302440 its reverse (44203312104), we get a palindrome (445416614544).

The spelling of 401213302440 in words is "four hundred one billion, two hundred thirteen million, three hundred two thousand, four hundred forty".