42400321927840 has 48 divisors (see below), whose sum is σ = 100211798249640. Its totient is φ = 16953180590080.

The previous prime is 42400321927819. The next prime is 42400321927969. The reversal of 42400321927840 is 4872912300424.

It can be written as a sum of positive squares in 4 ways, for example, as 18060426059536 + 24339895868304 = 4249756^2 + 4933548^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53890885 + ... + 54672004.

Almost surely, 2^{42400321927840} is an apocalyptic number.

42400321927840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42400321927840 is an abundant number, since it is smaller than the sum of its proper divisors (57811476321800).

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

42400321927840 is a wasteful number, since it uses less digits than its factorization.

42400321927840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108565345 (or 108565337 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 42400321927840 in words is "forty-two trillion, four hundred billion, three hundred twenty-one million, nine hundred twenty-seven thousand, eight hundred forty".