402144123430 has 16 divisors (see below), whose sum is σ = 827267911200. Its totient is φ = 137877985152.

The previous prime is 402144123413. The next prime is 402144123467. The reversal of 402144123430 is 34321441204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872457955 + ... + 2872458094.

It is an arithmetic number, because the mean of its divisors is an integer number (51704244450).

Almost surely, 2^402144123430 is an apocalyptic number.

402144123430 is an abundant number, since it is smaller than the sum of its proper divisors (425123787770).

402144123430 is a wasteful number, since it uses less digits than its factorization.

402144123430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744916063.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 402144123430 its reverse (34321441204), we get a palindrome (436465564634).

The spelling of 402144123430 in words is "four hundred two billion, one hundred forty-four million, one hundred twenty-three thousand, four hundred thirty".