1421321042040 has 128 divisors (see below), whose sum is σ = 4515129034560. Its totient is φ = 356696489984.

The previous prime is 1421321042033. The next prime is 1421321042041. The reversal of 1421321042040 is 402401231241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1421321042040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421321042041) 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 31 ways as a sum of consecutive naturals, for example, 47755804 + ... + 47785556.

Almost surely, 2^{1421321042040} is an apocalyptic number.

1421321042040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421321042040 is an abundant number, since it is smaller than the sum of its proper divisors (3093807992520).

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

1421321042040 is a wasteful number, since it uses less digits than its factorization.

1421321042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53201 (or 53197 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1421321042040 its reverse (402401231241), we get a palindrome (1823722273281).

The spelling of 1421321042040 in words is "one trillion, four hundred twenty-one billion, three hundred twenty-one million, forty-two thousand, forty".