140240403002421 has 24 divisors (see below), whose sum is σ = 203818875270816. Its totient is φ = 92916991291680.

The previous prime is 140240403002383. The next prime is 140240403002423. The reversal of 140240403002421 is 124200304042041.

140240403002421 is a `hidden beast` number, since 1 + 40 + 2 + 40 + 40 + 300 + 242 + 1 = 666.

It is not a de Polignac number, because 140240403002421 - 2¹³ = 140240402994229 is a prime.

It is a super-2 number, since 2×140240403002421² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140240403002423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43891131 + ... + 46977783.

It is an arithmetic number, because the mean of its divisors is an integer number (8492453136284).

Almost surely, 2^{140240403002421} is an apocalyptic number.

It is an amenable number.

140240403002421 is a deficient number, since it is larger than the sum of its proper divisors (63578472268395).

140240403002421 is a wasteful number, since it uses less digits than its factorization.

140240403002421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117793 (or 3117790 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 140240403002421 its reverse (124200304042041), we get a palindrome (264440707044462).

The spelling of 140240403002421 in words is "one hundred forty trillion, two hundred forty billion, four hundred three million, two thousand, four hundred twenty-one".