402235140424 has 128 divisors (see below), whose sum is σ = 856150848000. Its totient is φ = 175873711104.

The previous prime is 402235140367. The next prime is 402235140467. The reversal of 402235140424 is 424041532204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38831854 + ... + 38842210.

It is an arithmetic number, because the mean of its divisors is an integer number (6688678500).

Almost surely, 2^402235140424 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 402235140424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428075424000).

402235140424 is an abundant number, since it is smaller than the sum of its proper divisors (453915707576).

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

402235140424 is a wasteful number, since it uses less digits than its factorization.

402235140424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10647 (or 10643 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 402235140424 its reverse (424041532204), we get a palindrome (826276672628).

The spelling of 402235140424 in words is "four hundred two billion, two hundred thirty-five million, one hundred forty thousand, four hundred twenty-four".