402144420414 has 64 divisors (see below), whose sum is σ = 969410280960. Its totient is φ = 109706910720.

The previous prime is 402144420401. The next prime is 402144420439. The reversal of 402144420414 is 414024441204.

It is a super-2 number, since 2×402144420414² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7765879 + ... + 7817490.

It is an arithmetic number, because the mean of its divisors is an integer number (15147035640).

Almost surely, 2^402144420414 is an apocalyptic number.

402144420414 is an abundant number, since it is smaller than the sum of its proper divisors (567265860546).

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

402144420414 is a wasteful number, since it uses less digits than its factorization.

402144420414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15583425.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 402144420414 its reverse (414024441204), we get a palindrome (816168861618).

The spelling of 402144420414 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty thousand, four hundred fourteen".