1020142453605 has 64 divisors (see below), whose sum is σ = 1850770833408. Its totient is φ = 475448175360.

The previous prime is 1020142453579. The next prime is 1020142453621. The reversal of 1020142453605 is 5063542410201.

1020142453605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020142453605 - 2²¹ = 1020140356453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 499909 + ... + 1513338.

It is an arithmetic number, because the mean of its divisors is an integer number (28918294272).

Almost surely, 2^{1020142453605} is an apocalyptic number.

1020142453605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020142453605 is a deficient number, since it is larger than the sum of its proper divisors (830628379803).

1020142453605 is a wasteful number, since it uses less digits than its factorization.

1020142453605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013386.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 1020142453605 its reverse (5063542410201), we get a palindrome (6083684863806).

The spelling of 1020142453605 in words is "one trillion, twenty billion, one hundred forty-two million, four hundred fifty-three thousand, six hundred five".