1040202042542 has 16 divisors (see below), whose sum is σ = 1687664055840. Its totient is φ = 477996770592.

The previous prime is 1040202042527. The next prime is 1040202042553. The reversal of 1040202042542 is 2452402020401.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87347258 + ... + 87359165.

It is an arithmetic number, because the mean of its divisors is an integer number (105479003490).

Almost surely, 2^{1040202042542} is an apocalyptic number.

1040202042542 is a deficient number, since it is larger than the sum of its proper divisors (647462013298).

1040202042542 is a wasteful number, since it uses less digits than its factorization.

1040202042542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174706667.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 1040202042542 its reverse (2452402020401), we get a palindrome (3492604062943).

The spelling of 1040202042542 in words is "one trillion, forty billion, two hundred two million, forty-two thousand, five hundred forty-two".