1020154514420 has 12 divisors (see below), whose sum is σ = 2142324480324. Its totient is φ = 408061805760.

The previous prime is 1020154514419. The next prime is 1020154514437. The reversal of 1020154514420 is 244154510201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 365887072996 + 654267441424 = 604886^2 + 808868^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25503862841 + ... + 25503862880.

It is an arithmetic number, because the mean of its divisors is an integer number (178527040027).

Almost surely, 2^{1020154514420} is an apocalyptic number.

1020154514420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020154514420 is an abundant number, since it is smaller than the sum of its proper divisors (1122169965904).

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

1020154514420 is a wasteful number, since it uses less digits than its factorization.

1020154514420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51007725730 (or 51007725728 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 1020154514420 in words is "one trillion, twenty billion, one hundred fifty-four million, five hundred fourteen thousand, four hundred twenty".