981240402 has 16 divisors (see below), whose sum is σ = 1965257280. Its totient is φ = 326617392.

The previous prime is 981240401. The next prime is 981240419. The reversal of 981240402 is 204042189.

981240402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 981240402.

It is not an unprimeable number, because it can be changed into a prime (981240401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111078 + ... + 119585.

It is an arithmetic number, because the mean of its divisors is an integer number (122828580).

Almost surely, 2^981240402 is an apocalyptic number.

981240402 is an abundant number, since it is smaller than the sum of its proper divisors (984016878).

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

981240402 is a wasteful number, since it uses less digits than its factorization.

981240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231377.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 981240402 is about 31324.7570142212. The cubic root of 981240402 is about 993.7072854707.

The spelling of 981240402 in words is "nine hundred eighty-one million, two hundred forty thousand, four hundred two".