840423955410 has 48 divisors (see below), whose sum is σ = 2353187078424. Its totient is φ = 206873588736.

The previous prime is 840423955381. The next prime is 840423955417. The reversal of 840423955410 is 14559324048.

840423955410 is a `hidden beast` number, since 8 + 40 + 42 + 3 + 9 + 554 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 771159716649 + 69264238761 = 878157^2 + 263181^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (840423955417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359154367 + ... + 359156706.

Almost surely, 2^840423955410 is an apocalyptic number.

840423955410 is an abundant number, since it is smaller than the sum of its proper divisors (1512763123014).

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

840423955410 is a wasteful number, since it uses less digits than its factorization.

840423955410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718311099 (or 718311096 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 840423955410 in words is "eight hundred forty billion, four hundred twenty-three million, nine hundred fifty-five thousand, four hundred ten".