402144340130 has 32 divisors (see below), whose sum is σ = 787259593008. Its totient is φ = 147013920000.

The previous prime is 402144340097. The next prime is 402144340141. The reversal of 402144340130 is 31043441204.

It can be written as a sum of positive squares in 8 ways, for example, as 245808715681 + 156335624449 = 495791^2 + 395393^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 402144340130.

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, 15300821 + ... + 15327080.

Almost surely, 2^402144340130 is an apocalyptic number.

402144340130 is a deficient number, since it is larger than the sum of its proper divisors (385115252878).

402144340130 is a wasteful number, since it uses less digits than its factorization.

402144340130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30628022.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 402144340130 its reverse (31043441204), we get a palindrome (433187781334).

The spelling of 402144340130 in words is "four hundred two billion, one hundred forty-four million, three hundred forty thousand, one hundred thirty".