42155034155542 has 128 divisors (see below), whose sum is σ = 79352298528768. Its totient is φ = 16316832153600.

The previous prime is 42155034155537. The next prime is 42155034155599. The reversal of 42155034155542 is 24555143055124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42155034155492 and 42155034155501.

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, 21151546498 + ... + 21151548490.

It is an arithmetic number, because the mean of its divisors is an integer number (619939832256).

Almost surely, 2^{42155034155542} is an apocalyptic number.

42155034155542 is a deficient number, since it is larger than the sum of its proper divisors (37197264373226).

42155034155542 is a wasteful number, since it uses less digits than its factorization.

42155034155542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614.

The product of its (nonzero) digits is 2400000, while the sum is 46.

The spelling of 42155034155542 in words is "forty-two trillion, one hundred fifty-five billion, thirty-four million, one hundred fifty-five thousand, five hundred forty-two".