1420240415640 has 64 divisors (see below), whose sum is σ = 4484969740800. Its totient is φ = 358797578112.

The previous prime is 1420240415639. The next prime is 1420240415681. The reversal of 1420240415640 is 465140420241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311453952 + ... + 311458511.

It is an arithmetic number, because the mean of its divisors is an integer number (70077652200).

Almost surely, 2^{1420240415640} is an apocalyptic number.

1420240415640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420240415640 is an abundant number, since it is smaller than the sum of its proper divisors (3064729325160).

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

1420240415640 is a wasteful number, since it uses less digits than its factorization.

1420240415640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622912496 (or 622912492 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 1420240415640 its reverse (465140420241), we get a palindrome (1885380835881).

The spelling of 1420240415640 in words is "one trillion, four hundred twenty billion, two hundred forty million, four hundred fifteen thousand, six hundred forty".