1420154243145 has 48 divisors (see below), whose sum is σ = 2709147123072. Its totient is φ = 682466158080.

The previous prime is 1420154243141. The next prime is 1420154243153. The reversal of 1420154243145 is 5413424510241.

1420154243145 is a `hidden beast` number, since 1 + 42 + 0 + 1 + 542 + 4 + 31 + 45 = 666.

It is not a de Polignac number, because 1420154243145 - 2² = 1420154243141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420154243141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12638749 + ... + 12750618.

It is an arithmetic number, because the mean of its divisors is an integer number (56440565064).

Almost surely, 2^{1420154243145} is an apocalyptic number.

1420154243145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420154243145 is a deficient number, since it is larger than the sum of its proper divisors (1288992879927).

1420154243145 is a wasteful number, since it uses less digits than its factorization.

1420154243145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25389502 (or 25389499 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 1420154243145 its reverse (5413424510241), we get a palindrome (6833578753386).

The spelling of 1420154243145 in words is "one trillion, four hundred twenty billion, one hundred fifty-four million, two hundred forty-three thousand, one hundred forty-five".