402234131420 has 144 divisors (see below), whose sum is σ = 987020191584. Its totient is φ = 137111040000.

The previous prime is 402234131399. The next prime is 402234131441. The reversal of 402234131420 is 24131432204.

It is an interprime number because it is at equal distance from previous prime (402234131399) and next prime (402234131441).

It is a self number, because there is not a number n which added to its sum of digits gives 402234131420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10306664 + ... + 10345616.

It is an arithmetic number, because the mean of its divisors is an integer number (6854306886).

Almost surely, 2^402234131420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402234131420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493510095792).

402234131420 is an abundant number, since it is smaller than the sum of its proper divisors (584786060164).

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

402234131420 is a wasteful number, since it uses less digits than its factorization.

402234131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39252 (or 39239 counting only the distinct ones).

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

Adding to 402234131420 its reverse (24131432204), we get a palindrome (426365563624).

The spelling of 402234131420 in words is "four hundred two billion, two hundred thirty-four million, one hundred thirty-one thousand, four hundred twenty".