402441401040 has 80 divisors (see below), whose sum is σ = 1425792398208. Its totient is φ = 91986605568.

The previous prime is 402441400997. The next prime is 402441401053. The reversal of 402441401040 is 40104144204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×402441401040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 402441401040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119772547 + ... + 119775906.

Almost surely, 2^402441401040 is an apocalyptic number.

402441401040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402441401040 is an abundant number, since it is smaller than the sum of its proper divisors (1023350997168).

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

402441401040 is a wasteful number, since it uses less digits than its factorization.

402441401040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239548476 (or 239548470 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 402441401040 its reverse (40104144204), we get a palindrome (442545545244).

The spelling of 402441401040 in words is "four hundred two billion, four hundred forty-one million, four hundred one thousand, forty".