402540144210 has 160 divisors (see below), whose sum is σ = 1087775580672. Its totient is φ = 106810980480.

The previous prime is 402540144179. The next prime is 402540144263. The reversal of 402540144210 is 12441045204.

402540144210 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 401 + 44 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 79 ways as a sum of consecutive naturals, for example, 160821819 + ... + 160824321.

Almost surely, 2^402540144210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402540144210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543887790336).

402540144210 is an abundant number, since it is smaller than the sum of its proper divisors (685235436462).

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

402540144210 is a wasteful number, since it uses less digits than its factorization.

402540144210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 3421 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 402540144210 its reverse (12441045204), we get a palindrome (414981189414).

The spelling of 402540144210 in words is "four hundred two billion, five hundred forty million, one hundred forty-four thousand, two hundred ten".