1020202540042 has 16 divisors (see below), whose sum is σ = 1756424734272. Its totient is φ = 435353136480.

The previous prime is 1020202540031. The next prime is 1020202540043. The reversal of 1020202540042 is 2400452020201.

1020202540042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1020202540042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020202539995 and 1020202540022.

It is not an unprimeable number, because it can be changed into a prime (1020202540043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156373584 + ... + 156380107.

It is an arithmetic number, because the mean of its divisors is an integer number (109776545892).

Almost surely, 2^{1020202540042} is an apocalyptic number.

1020202540042 is a deficient number, since it is larger than the sum of its proper divisors (736222194230).

1020202540042 is a wasteful number, since it uses less digits than its factorization.

1020202540042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312753933.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 1020202540042 its reverse (2400452020201), we get a palindrome (3420654560243).

The spelling of 1020202540042 in words is "one trillion, twenty billion, two hundred two million, five hundred forty thousand, forty-two".