402334543040 has 112 divisors (see below), whose sum is σ = 986359427328. Its totient is φ = 156225936384.

The previous prime is 402334542983. The next prime is 402334543141. The reversal of 402334543040 is 40345433204.

It is a super-2 number, since 2×402334543040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 402334542988 and 402334543006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153189 + ... + 2332571.

Almost surely, 2^402334543040 is an apocalyptic number.

402334543040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402334543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493179713664).

402334543040 is an abundant number, since it is smaller than the sum of its proper divisors (584024884288).

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

402334543040 is a wasteful number, since it uses less digits than its factorization.

402334543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179606 (or 179596 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 402334543040 its reverse (40345433204), we get a palindrome (442679976244).

The spelling of 402334543040 in words is "four hundred two billion, three hundred thirty-four million, five hundred forty-three thousand, forty".