402003043340 has 12 divisors (see below), whose sum is σ = 844206391056. Its totient is φ = 160801217328.

The previous prime is 402003043333. The next prime is 402003043373. The reversal of 402003043340 is 43340300204.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050076064 + ... + 10050076103.

It is an arithmetic number, because the mean of its divisors is an integer number (70350532588).

Almost surely, 2^402003043340 is an apocalyptic number.

It is an amenable number.

402003043340 is an abundant number, since it is smaller than the sum of its proper divisors (442203347716).

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

402003043340 is a wasteful number, since it uses less digits than its factorization.

402003043340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100152176 (or 20100152174 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 402003043340 its reverse (43340300204), we get a palindrome (445343343544).

The spelling of 402003043340 in words is "four hundred two billion, three million, forty-three thousand, three hundred forty".