402403161420 has 144 divisors (see below), whose sum is σ = 1316831574240. Its totient is φ = 98878675968.

The previous prime is 402403161397. The next prime is 402403161427. The reversal of 402403161420 is 24161304204.

It is a happy number.

402403161420 is a `hidden beast` number, since 4 + 0 + 2 + 40 + 3 + 1 + 614 + 2 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (402403161427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1180347 + ... + 1482573.

It is an arithmetic number, because the mean of its divisors is an integer number (9144663710).

Almost surely, 2^402403161420 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 402403161420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658415787120).

402403161420 is an abundant number, since it is smaller than the sum of its proper divisors (914428412820).

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

402403161420 is a wasteful number, since it uses less digits than its factorization.

402403161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302824 (or 302819 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 402403161420 its reverse (24161304204), we get a palindrome (426564465624).

The spelling of 402403161420 in words is "four hundred two billion, four hundred three million, one hundred sixty-one thousand, four hundred twenty".