403242120402 has 64 divisors (see below), whose sum is σ = 891860889600. Its totient is φ = 120522804480.

The previous prime is 403242120389. The next prime is 403242120403. The reversal of 403242120402 is 204021242304.

It is not an unprimeable number, because it can be changed into a prime (403242120403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5054499 + ... + 5133657.

It is an arithmetic number, because the mean of its divisors is an integer number (13935326400).

Almost surely, 2^403242120402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403242120402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445930444800).

403242120402 is an abundant number, since it is smaller than the sum of its proper divisors (488618769198).

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

403242120402 is a wasteful number, since it uses less digits than its factorization.

403242120402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80231.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 403242120402 its reverse (204021242304), we get a palindrome (607263362706).

The spelling of 403242120402 in words is "four hundred three billion, two hundred forty-two million, one hundred twenty thousand, four hundred two".