1420381439145 has 24 divisors (see below), whose sum is σ = 2462156738496. Its totient is φ = 757486846368.

The previous prime is 1420381439129. The next prime is 1420381439161. The reversal of 1420381439145 is 5419341830241.

1420381439145 is a `hidden beast` number, since 1 + 4 + 203 + 8 + 1 + 439 + 1 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1420381439129) and next prime (1420381439161).

It is not a de Polignac number, because 1420381439145 - 2⁴ = 1420381439129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1420381439145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344467 + ... + 1720296.

It is an arithmetic number, because the mean of its divisors is an integer number (102589864104).

Almost surely, 2^{1420381439145} is an apocalyptic number.

1420381439145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420381439145 is a deficient number, since it is larger than the sum of its proper divisors (1041775299351).

1420381439145 is a wasteful number, since it uses less digits than its factorization.

1420381439145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080061 (or 2080058 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1420381439145 in words is "one trillion, four hundred twenty billion, three hundred eighty-one million, four hundred thirty-nine thousand, one hundred forty-five".